Previously, when lame cache would be disabled by setting lame-ttl to 0,
it would also disable lame answer detection. In this commit, we enable
the lame response detection even when the lame cache is disabled. This
enables stopping answer processing early rather than going through the
whole answer processing flow.
The lame-ttl cache is implemented in ADB as per-server locked
linked-list "indexed" with <qname,qtype>. This list has to be walked
every time there's a new query or new record added into the lame cache.
Determined attacker can use this to degrade performance of the resolver.
Resolver testing has shown that disabling the lame cache has little
impact on the resolver performance and it's a minimal viable defense
against this kind of attack.
It was discovered that FreeBSD doesn't setup alias from default
Python version neither to python3 nor python, and thus the configure
step would fail to find working python installation.
The implicit ./configure default is to use --with-gssapi=auto. There is
already a GitLab CI job (gcc:stretch:amd64) which uses --without-gssapi.
Add four more forms of the --with-gssapi option to various GitLab CI job
configurations so that its every possible variant is regularly tested.
The autoconf script would call the krb5-config with both gssapi and krb5
libraries as arguments in a single call. It turned out that this is
actually not supported and it breaks some platforms. This commit splits
the call into two separate calls - one for gssapi and one for krb5
library.
respdiff needs to be run regularly to identify problems with query
responses discrepancies sooner than after tagging a release.
Contrary to the main branch, which hosts the BIND 9 Development Version
and thus sets MAX_DISAGREEMENTS_PERCENTAGE variable to 0.5, branches
hosting BIND 9 Stable Versions have it set to 0.1, which provides only
tiny room for non-timeout response disagreements between the baseline
version and version under test.
(cherry picked from commit 561b58196b)
Anchor lets the user see the full command logged in GitLab CI:
${CONFIGURE} --disable-maintainer-mode --enable-developer ...
Instead of a folded multi-line when literal block is used:
${CONFIGURE} \ # collapsed multi-line command
(cherry picked from commit c22008629e)
Make sure an incoming IXFR containing an SOA record which is not placed
at the apex of the transferred zone does not result in a broken version
of the zone being served by named and/or a subsequent crash.
(cherry picked from commit 5547003a3d)
BIND installation should be done by setting $DESTDIR during "make
install", not by setting --prefix via ./configure to the destination
directory. However, on 9.11 --prefix still needs to be set to eliminate
the compatibility mode with older BIND9 releases (see the comment in
configure.ac, lines 379-396), which does not place sysconfdir and
localstatedir to $DESTDIR/$prefix but directly to $DESTDIR. When
--prefix is set they end up in $DESTDIR/$prefix, which is the BIND 9.16+
default).
$ ./configure && make && make install DESTDIR=/tmp/bind9
$ ls /tmp/bind9/{,usr/local}
/tmp/bind9/:
etc usr var
/tmp/bind9/usr/local:
bin include lib sbin share
$ ./configure --prefix=/usr/local && make && make install DESTDIR=/tmp/bind9
$ ls /tmp/bind9/{,usr/local}
/tmp/bind9/:
usr
/tmp/bind9/usr/local:
bin etc include lib sbin share var
Make sure that installation with DESTDIR=<PATH> works by checking that
named binary and it's respective man page were installed and that
well-known BIND9 directories - and only them - are present in DESTDIR.
Also rename install path variable from BIND_INSTALL_PATH to
INSTALL_PATH to avoid namespace clash in stress tests which use
BIND_INSTALL_PATH variable to configure path to BIND9 binaries.
(cherry picked from commit 823bf3e79b)
Ubuntu 16.04 (Xenial Xerus) is reaching End of Standard Support in April
2021 thus we are removing it from the list of supported platforms and
replacing it with Ubuntu 18.04 LTS (Bionic Beaver).
(cherry picked from commit 4402a90bb7)
Running gcc:tarball CI job for merge requests is consistent with how we
run gcc:out-of-tree CI job and should help identify problems with the
build system during the review process, not once merged during daily
runs. For the sake of time, unit and system tests associated with the
gcc:tarball CI job are excluded from merge requests.
Also, make sure that the tarball-create CI job includes the
default_triggering_rules anchor (as it is on the main branch), otherwise
adding the gcc:tarball CI job to merge request-triggered pipeline fails
with:
Found errors in your .gitlab-ci.yml: 'gcc:tarball' job needs 'tarball-create' job but it was not added to the pipeline
(cherry picked from commit 83617cea9a)
It's a common pattern to spawn CI jobs only for pipelines triggered by
schedules, tags, and web. There should be an anchor so that the rules
are not repeated.
(cherry picked from commit e4f88c359c)
GCC 11 produced the following warning:
iterated_hash.c:21:33: warning: argument 1 of type ‘unsigned char[20]’ with mismatched bound [-Warray-parameter=]
21 | isc_iterated_hash(unsigned char out[ISC_SHA1_DIGESTLENGTH],
| ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from iterated_hash.c:18:
./include/isc/iterated_hash.h:33:37: note: previously declared as ‘unsigned char[155]’
33 | int isc_iterated_hash(unsigned char out[NSEC3_MAX_HASH_LENGTH],
| ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
Add REQUIRE(type == dns_rdatatype_nsec3 || firstp != NULL); so
that dereferences of *firstp is not flagged as a NULL pointer
dereference.
(cherry picked from commit 683ad6e4bd)
FreeBSD 13.0 replaced GNU grep with BSD grep and removed support for
"redundant escapes for most ordinary characters" from regex(3) library,
therefore the matching sequence in digdelv/tests.sh needs to be
rewritten otherwise it fails with:
grep: trailing backslash (\)
(cherry picked from commit 253ae96bf1)
When the `named` would hang on startup it would be killed with SIGKILL
leaving us with no information about the state the process was in.
This commit changes the start.pl script to send SIGABRT instead, so we
can properly collect and process the coredump from the hung named
process.
(cherry picked from commit 861a236937)
The nsupdate system test did not record failures from the
'update_test.pl' Perl script. This was because the 'ret' value was
not being saved outside the '{ $PERL ... || ret=1 } cat_i' scope.
Change this piece to store the output in a separate file and then
cat its contents. Now the 'ret' value is being saved.
Also record failures in 'update_test.pl' if sending the update
failed.
Add missing 'n' incrementals to 'nsupdate/test.sh' to keep track of
test numbers.
(cherry picked from commit 5b31811b5f)
Add missing DNS results from 9.16. We only care about
DNS_R_NSEC3ITERRANGE but better to sync and use the same numbers than
use a different number for this result code than what is used in 9.16.
* The location of the digest type field has changed to where the
reserved field was.
* The reserved field is now called scheme and is where the digest
type field was.
* Digest type 2 has been defined (SHA256).
(cherry picked from commit 8510ccaa54)
5625. [func] Reduce the supported maximum number of iterations
that can be configured in an NSEC3 zones to 150.
[GL #2642]
(cherry picked from commit e04f06873f)
dnstap_test produces TSAN errors which originate in libfstrm.so. Unless
libfstrm is TSAN clean or a workaround is placed in libfstrm sources,
suppressing TSAN coming from libfstrm is necessary to test DNSTAP under
TSAN.
(cherry picked from commit c97c6fbfea)
All platforms but OpenBSD have dnstap dependencies readily in their
respective repositories, and dnstap thus can be tested there. Given that
majority of images have dnstap dependencies available, it seems fitting
to make dnstap enabled by default.
Also dnstap is disabled for TSAN jobs configured with --disable-atomic
as it's known to produce TSAN errors (#2664) and for the gcc:noatomics
job because it has threads disabled, which is a requirement for dnstap.
(cherry picked from commit deff0ae317)
[CVE-2021-25215] [v9_11] Properly answer queries for DNAME records that require the DNAME to be processed to resolve itself
See merge request isc-private/bind9!282
When answering a query, named should never attempt to add the same RRset
to the ANSWER section more than once. However, such a situation may
arise when chasing DNAME records: one of the DNAME records placed in the
ANSWER section may turn out to be the final answer to a client query,
but there is no way to know that in advance. Tweak the relevant INSIST
assertion in query_find() so that it handles this case properly. The
rdataset is freed later anyway, so there is no need to clean it up
immediately.
If a zone transfer results in a zone not having any NS records, named
stops serving it because such a zone is broken. Do the same if an
incoming zone transfer results in a zone lacking an SOA record at the
apex or containing more than one SOA record.
An IXFR containing SOA records with owner names different than the
transferred zone's origin can result in named serving a version of that
zone without an SOA record at the apex. This causes a RUNTIME_CHECK
assertion failure the next time such a zone is refreshed. Fix by
immediately rejecting a zone transfer (either an incremental or
non-incremental one) upon detecting an SOA record not placed at the apex
of the transferred zone.
GitLab CI pipelines do not currently include a Linux job that would have
GSSAPI support disabled. Add the "--without-gssapi" option to the
./configure invocation on Debian 9 to address that deficiency and also
to continuously test that build-time switch.
(cherry picked from commit a3957af864)
If "tkey-gssapi-credential" is set in the configuration and GSSAPI
support is not available, named will refuse to start. As the test
system framework does not support starting named instances
conditionally, ensure that "tkey-gssapi-credential" is only present in
named.conf if GSSAPI support is available.
(cherry picked from commit 6feac68b50)
Four named instances in the "nsupdate" system test have GSS-TSIG support
enabled. All of them currently use "tkey-gssapi-keytab". Configure two
of them with "tkey-gssapi-credential" to test that option.
As "tkey-gssapi-keytab" and "tkey-gssapi-credential" both provide the
same functionality, no test modifications are required. The difference
between the two options is that the value of "tkey-gssapi-keytab" is an
explicit path to the keytab file to acquire credentials from, while the
value of "tkey-gssapi-credential" is the name of the principal whose
credentials should be used; those credentials are looked up in the
keytab file expected by the Kerberos library, i.e. /etc/krb5.keytab by
default. The path to the default keytab file can be overridden using by
setting the KRB5_KTNAME environment variable. Utilize that variable to
use existing keytab files with the "tkey-gssapi-credential" option.
The KRB5_KTNAME environment variable should not interfere with the
"tkey-gssapi-keytab" option. Nevertheless, rename one of the keytab
files used with "tkey-gssapi-keytab" to something else than the contents
of the KRB5_KTNAME environment variable in order to make sure that both
"tkey-gssapi-keytab" and "tkey-gssapi-credential" are actually tested.
(cherry picked from commit 1746d2e84a)
BIND 9 attempts to look up GSSAPI OIDs for the Kerberos 5 and SPNEGO
mechanisms in the relevant header files provided by the Kerberos/GSSAPI
library used. Due to the differences between various Kerberos/GSSAPI
implementations, if any of the expected preprocessor macros
(GSS_KRB5_MECHANISM, GSS_SPNEGO_MECHANISM) is not defined in the header
files provided by the library used, the code in lib/dns/gssapictx.c
defines its own version of each missing macro, so that BIND 9 can
attempt to use the relevant security mechanisms anyway.
Commit 7f08c756aa, which contains a
partial backport of the changes introduced in commit
978c7b2e89, left a block of code in the
lib/dns/include/dst/gssapi.h header which defines the
GSS_SPNEGO_MECHANISM preprocessor macro to NULL if it is not defined by
any header file provided by the Kerberos/GSSAPI library used. This
causes the gss_add_oid_set_member() call in the mech_oid_set_create()
helper function to always return an error. This in turn causes the
dst_gssapi_acquirecred() function to also always return an error, which
ultimately prevents any named instance whose configuration includes the
"tkey-gssapi-credential" option from starting.
Remove the offending conditional definition of the GSS_SPNEGO_MECHANISM
preprocessor macro from lib/dns/include/dst/gssapi.h, so that a proper
GSSAPI OID is assigned to that macro in lib/dns/gssapictx.c when the
Kerberos/GSSAPI library used does not define it.
(cherry picked from commit 648ef3a2b4)
Commit 7f08c756aa inadvertently included
libtool updates which were unrelated to the removal of custom SPNEGO
code. Roll these updates back to avoid confusion.
(cherry picked from commit 87f1db2ce4)
add matching macros to pass arguments from called methods
to generic methods. This will reduce the amount of work
required when extending methods.
Also cleanup unnecessary UNUSED declarations.
(cherry picked from commit a88d3963e2)
Even if a call to gss_accept_sec_context() fails, it might still cause a
GSS-API response token to be allocated and left for the caller to
release. Make sure the token is released before an early return from
dst_gssapi_acceptctx().
(cherry picked from commit d954e152d9)
Commit de35d321f0 (a backport of commit
4d5d3b75da) did not account for the fact
that the "tarball-create" GitLab CI job is not created for manually
triggered pipelines. This prevents manual pipeline creation from
succeeding as it causes the "gcc:tarball" job to have unsatisfied
dependencies. Make sure the "tarball-create" job is created for
manually triggered pipelines to allow such pipelines to be started
again.
(cherry picked from commit 233294d750)
Fix race between zone_maintenance and dns_zone_notifyreceive functions,
zone_maintenance was attempting to read a zone flag calling
DNS_ZONE_FLAG(zone, flag) while dns_zone_notifyreceive was updating
a flag in the same zone calling DNS_ZONE_SETFLAG(zone, ...).
The code reading the flag in zone_maintenance was not protected by the
zone's lock, to avoid a race the zone's lock is now being acquired
before an attempt to read the zone flag is made.
Previously, every function had it's own #ifdef GSSAPI #else #endif block
that defined shim function in case GSSAPI was not being used. Now the
dummy shim functions have be split out into a single #else #endif block
at the end of the file.
This makes the gssapictx.c similar to 9.17.x code, making the backports
and reviews easier.
The Heimdal Kerberos library handles the OID sets in a different manner.
Unify the handling of the OID sets between MIT and Heimdal
implementations by dynamically creating the OID sets instead of using
static predefined set. This is how upstream recommends to handle the
OID sets.
The custom ISC SPNEGO mechanism implementation is no longer needed on
the basis that all major Kerberos 5/GSSAPI (mit-krb5, heimdal and
Windows) implementations support SPNEGO mechanism since 2006.
This commit removes the custom ISC SPNEGO implementation, and removes
the option from both autoconf and win32 Configure script. Unknown
options are being ignored, so this doesn't require any special handling.
When the authsock.pl script would be terminated with a signal,
it would leave the pidfile around. This commit adds a signal
handler that cleanups the pidfile on signals that are expected.
The gcc:tarball CI job may identify problems with tarballs created by
"make dist" of the tarball-create CI job. Enabling the gcc:tarball CI
job in web-triggered pipelines provides developers with a test vector.
(cherry picked from commit 4d5d3b75da)
The 'checknames' field wasn't initialized in dns_view_create(), but it
should otherwise AddressSanitizer identifies the following runtime error
in query_test.c.
runtime error: load of value 190, which is not a valid value for type '_Bool'
(cherry picked from commit 0c6fa16477)
Removing stderr from the pict tool serves no purpose and drops valuable
information, we might use when debugging failed pairwise CI job, such
as:
Input Error: A parameter names must be unique
(cherry picked from commit 079debaa10)
"kyua report-html" command in CI generates more than two pages of output
to stdout, which is nothing but which HTML pages Kyua generated, e.g.:
Generating kyua_html/context.html
Generating kyua_html/lib_dns_tests_acl_test_main.html
...
Generating kyua_html/lib_ns_tests_query_test_main.html
Generating kyua_html/report.css
Generating kyua_html/index.html
This is seldomly useful and requires the user to scroll three pages
upwards to get to unit test results.
(cherry picked from commit 74fa196286)
Run this check only when in Git repository, because run.sh produces the
"file not removed" warnings only when in Git repository.
(cherry picked from commit 4a2778abdf)
The ISC SPNEGO implementation is based on mod_auth_kerb code. When
CVE-2006-5989 was disclosed, the relevant fix was not applied to the
BIND 9 codebase, making the latter vulnerable to the aforementioned flaw
when "tkey-gssapi-keytab" or "tkey-gssapi-credential" is set in
named.conf.
The original description of CVE-2006-5989 was:
Off-by-one error in the der_get_oid function in mod_auth_kerb 5.0
allows remote attackers to cause a denial of service (crash) via a
crafted Kerberos message that triggers a heap-based buffer overflow
in the component array.
Later research revealed that this flaw also theoretically enables remote
code execution, though achieving the latter in real-world conditions is
currently deemed very difficult.
This vulnerability was responsibly reported as ZDI-CAN-12302 ("ISC BIND
TKEY Query Heap-based Buffer Overflow Remote Code Execution
Vulnerability") by Trend Micro Zero Day Initiative.
The --enable-option-checking=fatal option prevents ./configure from
proceeding when an unknown option is used in the ./configure step in CI.
This change will avoid adding unsupported ./configure options or options
with typo or typo in pairwise testing "# [pairwise: ...]" marker.
(cherry picked from commit 4295c82e45)
The --enable-pthread-rwlock and --enable-mutex-atomics switches for
./configure are not available in BIND 9.11. Do not attempt using them
in GitLab CI.
As we generate manual pages from DocBook sources, we don't have absolute
control on manual page output and therefore 'mandoc -Tlint' may always
report warnings we can't eliminate. In light of this linting level was
set for mandoc to '-Werror' to ignore warnings and style issues, only
errors are reported.
(cherry picked from commit 22fdcb30db)
-fsanitize=thread hijacks dlopen() and dlclose(), therefore dlopen()
won't request -ldl to be used for linking during Autoconf test. Check
for dlsym() presence will fail and dlzexternal and dyndb system tests
won't run.
Retrieved from 2dd54fa62f.
Some merge requests (e.g. those created for release branches) include
merge commits. Prevent Danger from warning about excessive subject line
length for merge commits. (While the proper way to detect a merge
commit would be to check the 'parents' attribute of a commit object,
Danger Python does not seem to populate that attribute, so a simple
string search is performed on the commit subject instead.)
(cherry picked from commit bc42690c99)
The Danger GitLab CI job currently flags excessively long lines in
commit log messages. Exclude lines containing references (i.e. starting
with "[1]", "[2]", etc.) from this check. This allows e.g. long URLs to
be included in commit log messages without triggering Danger warnings.
(cherry picked from commit 09964e8085)
The Danger GitLab CI job currently generates a separate error message
about fixup commits being present in a merge request for every such
commit found. Prevent that by making it only log that error message
once per run.
(cherry picked from commit 801d13f62f)
Make the Danger GitLab CI job fail when the subject line for any commit
belonging to a merge request contains a trailing dot.
(cherry picked from commit 953c810f41)
Make the Danger GitLab CI job fail when a merge request adds a new
./configure switch without also adding a "# [pairwise: ...]" marker that
the relevant GitLab CI job uses for preparing the pairwise testing
model. This helps to ensure that any newly added ./configure switches
are tested by the pairwise testing GitLab CI job.
(cherry picked from commit ff58ec8cef)
Make Danger suggest adding a release note to a merge request if the
latter is marked with the "Customer" label but not with the "Release
Notes" label.
(cherry picked from commit d81ad454cc)
Make the Danger GitLab CI job fail when a merge request targeting a
branch different than "main" adds any [placeholder] entries to the
CHANGES file. Prevent Danger from flagging missing GitLab identifiers
for [placeholder] CHANGES entries.
(cherry picked from commit 2f77c7680a)
Make Danger ensure that if a merge request fixes a security issue then
that merge request includes a CHANGES entry and a release note, both of
which contain a CVE identifier.
(cherry picked from commit 97364f5518)
It is possible to have two threads destroying an rbtdb at the same
time when detachnode() executes and removes the last reference to
a node between exiting being set to true for the node and testing
if the references are zero in maybe_free_rbtdb(). Move NODE_UNLOCK()
to after checking if references is zero to prevent detachnode()
changing the reference count too early.
(cherry picked from commit 859d2fdad6)
The DNS Flag Day 2020 reduced all the EDNS buffer sizes to 1232. In
this commit, we revert the default value for nocookie-udp-size back to
4096 because the option is too obscure and most people don't realize
that they also need to change this configuration option in addition to
max-udp-size.
(cherry picked from commit 79c196fc77)
Since the queries sent towards root and TLD servers are now included in
the count (as a result of the fix for CVE-2020-8616),
"max-recursion-queries" has a higher chance of being exceeded by
non-attack queries. Increase its default value from 75 to 100.
(cherry picked from commit ab0bf49203)
Every DocBook source document can be namespaced (DocBook 5) or
non-namespaced (DocBook 4). The set of XSL stylesheets used for
producing an output document can also be namespaced or non-namespaced.
Namespaced source documents should be used with namespaced stylesheets
and non-namespaced source documents should be used with non-namespaced
stylesheets. However, both stylesheet flavors contain processing rules
which allow them to be used interchangeably for any type of source
document.
Unfortunately, these processing rules became broken in version 1.79.1 of
the stylesheets, which means that non-namespaced source documents can no
longer be correctly transformed into man pages using namespaced
stylesheets and vice versa. This problem was fixed upstream [1], but no
released version of the XSL stylesheets contains that fix yet.
Back in 2016, this problem was reported as RT #43831 and allegedly fixed
in commit 1b8ce3b330. However, that fix
only helped for the non-namespaced version of the stylesheets - while
also breaking man page generation for the namespaced flavor.
Since using namespaced DocBook sources is the current best practice
(DocBook 5), make BIND DocBook sources namespaced again. When using
version 1.79.1 or 1.79.2 of the XSL stylesheets, care must be taken to
ensure namespaced stylesheets are used for generating BIND
documentation.
[1] https://github.com/docbook/xslt10-stylesheets/issues/109
Fallback to TCP when we have already seen a DNS COOKIE response
from the given address and don't have one in this UDP response. This
could be a server that has turned off DNS COOKIE support, a
misconfigured anycast server with partial DNS COOKIE support, or a
spoofed response. Falling back to TCP is the correct behaviour in
all 3 cases.
(cherry picked from commit 0e3b1f5a25)
The traceback files could overwrite each other on systems which do not
use different core dump file names for different processes. Prevent
that by writing the traceback file to the same directory as the core
dump file.
These changes still do not prevent the operating system from overwriting
a core dump file if the same binary crashes multiple times in the same
directory and core dump files are named identically for different
processes.
(cherry picked from commit 6428fc26af)
Due to seccomp issues with 32-bit Debian sid Docker containers that
prevent us from easily updating the contents of the 32-bit Debian sid
Docker image, switch to CentOS 6 for building and testing 32-bit
versions of BIND in GitLab CI.
Make sure pointer checks in unit tests use cmocka assertion macros
dedicated for use with pointers instead of those dedicated for use with
integers or booleans.
(cherry picked from commit f440600126)
cppcheck 2.2 reports the following false positive:
lib/dns/dispatch.c:1220:14: warning: Either the condition 'resp==NULL' is redundant or there is possible null pointer dereference: resp. [nullPointerRedundantCheck]
if (disp != resp->disp) {
^
lib/dns/dispatch.c:1191:11: note: Assuming that condition 'resp==NULL' is not redundant
if (resp == NULL) {
^
lib/dns/dispatch.c:1220:14: note: Null pointer dereference
if (disp != resp->disp) {
^
Apparently this version of cppcheck gets confused about conditional
"goto" statements because line 1220 can never be reached if 'resp' is
NULL.
Move a code block to prevent the above false positive from being
reported without affecting the processing logic.
(cherry picked from commit 0b6216d1c7)
The cppcheck bug which commit 41b4af5d20
works around was fixed in cppcheck 2.2. Drop the relevant hack from the
definition of the cppcheck GitLab CI job.
(cherry picked from commit f06dfe0397)
The "stress" test can be run in different ways, depending on:
- the tested scenario (authoritative, recursive),
- the operating system used (Linux, FreeBSD),
- the architecture used (amd64, arm64).
Currently, all supported "stress" test variants are automatically
launched for all scheduled pipelines and for pipelines started for tags;
there is no possibility of running these tests on demand, which could be
useful in certain circumstances.
Employ the "only:variables" key to enable fine-grained control over the
list of "stress" test jobs to be run for a given pipeline. Three CI
variables are used to specify the list of "stress" test jobs to create:
- BIND_STRESS_TEST_MODE: specifies the test mode to use; must be
explicitly set in order for any "stress" test job to be created;
allowed values are: "authoritative", "recursive",
- BIND_STRESS_TEST_OS: specifies the operating system to run the test
on; allowed values are: "linux", "freebsd"; defaults to "linux", may
be overridden at pipeline creation time,
- BIND_STRESS_TEST_ARCH: specifies the architecture to run the test
on; allowed values are: "amd64", "arm64"; defaults to "amd64", may
be overridden at pipeline creation time.
Since case-insensitive regular expressions are used for determining
which jobs to run, every variable described above may contain multiple
values. For example, setting the BIND_STRESS_TEST_MODE variable to
"authoritative,recursive" will cause the "stress" test to be run in both
supported scenarios (either on the default OS/architecture combination,
i.e. Linux/amd64, or, if the relevant variables are explicitly
specified, the requested OS/architecture combinations).
(cherry picked from commit f23094223e)
Our GitLab Runner Custom executor scripts now use the "image" key for
determining the Windows Docker image to use for a given CI job. Update
.gitlab-ci.yml to reflect that change.
(cherry picked from commit 004ca913f2)
The following compiler warning is emitted for the BACKTRACE_X86STACK
part of lib/isc/backtrace.c:
backtrace.c: In function ‘getrbp’:
backtrace.c:139:1: warning: no return statement in function returning non-void [-Wreturn-type]
While getrbp() stores the value of the RBP register in the RAX register
and thus does attempt to return a value, this is not enough for an
optimizing compiler to always produce the expected result. With -O2,
the following machine code may be generated in isc_backtrace_gettrace():
0x00007ffff7b0ff7a <+10>: mov %rbp,%rax
0x00007ffff7b0ff7d <+13>: mov $0x17,%eax
0x00007ffff7b0ff82 <+18>: retq
The above is equivalent to:
sp = (void **)getrbp();
return (ISC_R_NOTFOUND);
and results in the backtrace never getting printed.
Fix by using an intermediate variable. With this change in place, the
machine code generated with -O2 becomes something like:
0x00007ffff7af5638 <+24>: mov $0x17,%eax
0x00007ffff7af563d <+29>: mov %rbp,%rdx
0x00007ffff7af5640 <+32>: test %rdx,%rdx
0x00007ffff7af5643 <+35>: je 0x7ffff7af56bd <isc_backtrace_gettrace+157>
...
0x00007ffff7af56bd <+157>: retq
(Note that this method of grabbing a stack trace is finicky anyway
because in order for RBP to be relied upon, -fno-omit-stack-frame must
be present among CFLAGS.)
(cherry picked from commit 923c443389)
Some operating systems (e.g. Linux, FreeBSD) provide the
_Unwind_Backtrace() function in libgcc_s.so, which is automatically
linked into any binary using the functions provided by that library. On
OpenBSD, though, _Unwind_Backtrace() is provided by libc++abi.so, which
is not automatically linked into binaries produced by the stock system C
compiler.
Meanwhile, lib/isc/backtrace.c assumes that any GNU-compatible toolchain
allows _Unwind_Backtrace() to be used without any extra provisions in
the build system. This causes build failures on OpenBSD (and possibly
other systems).
Instead of making assumptions, actually check for _Unwind_Backtrace()
support in the toolchain if the backtrace() function is unavailable.
(cherry picked from commit 10d7055791)
The make/mkdep script does not understand the concept of generated
source files (like lib/dns/dnstap.pb-c.c), which prevents it from
working correctly for out-of-tree builds. As "make depend" is not
required for building BIND and the "depend" make target was removed
altogether in the development branch, just prevent the "make depend"
check from being performed for out-of-tree builds in GitLab CI instead
of trying to add support for handling generated source files to
make/mkdep.
(cherry picked from commit 1b5a8a914c)
"make depend" prints errors to stderr, not to stdout. This means that
the check for "make depend" errors currently used in the definition of
every build job in GitLab CI could never fail. Fix that check by
redirecting stderr to stdout. Also employ tee to prevent the output of
"make depend" from being hidden in the job log. (While using tee hides
the exit code of "make depend" itself, the next line still checks for
errors anyway.)
(cherry picked from commit 0ab099ca09)
ans10 simulates a local anycast server which has both signed and
unsigned instances of a zone. 'A' queries get answered from the
signed instance. Everything else gets answered from the unsigned
instance. The resulting answer should be insecure.
(cherry picked from commit d7840f4b93)
DNS_R_NCACHENXRRSET can be return when zones are in transition state
from being unsigned to signed and signed to unsigned. The validation
should be resumed and should result in a insecure answer.
(cherry picked from commit 718e597def)
"tcp-only" was not being tested correctly in the RPZ system test
because the option to the "digcmd" function that causes queries to
be sent via TCP was misspelled in one case, and was being interpreted
as a query name.
the "ckresult" function has also been changed to be case sensitive
for consistency with "digcmd".
(cherry picked from commit 78af071c11)
This feature allows GitLab to visualize test coverage information in the
file diff view of merge requests.
This commit makes the gcov CI job depend on the following chain of jobs:
gcc:buster:amd64 → unit:gcc:buster:amd64 → system:gcc:buster:amd64
The reason for running the last two jobs above sequentially rather than
in parallel is that both of them create *.gcda files (containing
coverage data) in the same locations. While some way of merging these
files from different job artifact archives could probably be designed
with the help of additional tools, the simplest thing to do is not to
run unit test and system test jobs in parallel, carrying *.gcda files
over between jobs as gcov knows how to append coverage data to existing
*.gcda files.
Also note that test coverage will not be visualized if any of the jobs
in the above dependency chain fails (because the gcov job will not be
run).
(cherry picked from commit 2dabf328c4)
Run "stress" tests for scheduled pipelines and pipelines created for
tags. These tests were previously only performed manually (as part of
pre-release testing of each new BIND version). Their purpose is to
detect memory leaks and potential performance issues.
As the run time of each "stress" test itself is set to 1 hour, set the
GitLab CI job timeout to 2 hours in order to account for the extra time
needed to set the test up and gather its results.
(cherry picked from commit 39305411e8)
(cherry picked from commit 06f721fdc5)
On Linux core dump contains absolute path to crashed binary
Core was generated by `/home/newman/isc/ws/bind9/bin/named/.libs/lt-named -D glue-ns1 -X named.lock -m'.
However, on OpenBSD there's only a basename
Core was generated by `named'.
This commit adds support for the latter, retains the former.
(cherry picked from commit f0b13873a3)
(cherry picked from commit 659feff963)
This test is very simple, two nameserver instances are created:
- ns4: master, with 'minimal-responses yes', authoritative
for example. zone
- ns5: slave, stub zone
The first thing verified is the transfer of zone data from master
to slave, which should be saved in ns5/example.db.
After that, a query is issued to ns5 asking for target.example.
TXT, a record present in the master database with the "test" string
as content.
If that query works, it means stub zone successfully request
nameserver addresses from master, ns4.example. A/AAAA
The presence of both A/AAAA records for ns4 is also verified in the
stub zone local file, ns5/example.db.
Stub zones don't make use of AXFR/IXFR for the transfering of zone
data, instead, a single query is issued to the master asking for
their nameserver records (NS).
That works fine unless master is configured with 'minimal-responses'
set to yes, in which case glue records are not provided by master
in the answer with nameservers authoritative for the zone, leaving
stub zones with incomplete databases.
This commit fix this problem in a simple way, when the answer with
the authoritative nameservers is received from master (stub_callback),
for each nameserver listed (save_nsrrset), a A and AAAA records for
the name is verified in the additional section, and if not present
a query is created to resolve the corresponsing missing glue.
A struct 'stub_cb_args' was added to keep relevant information for
performing a query, like TSIG key, udp size, dscp value, etc, this
information is borrowed from, and created within function 'ns_query',
where the resolving of nameserver from master starts.
A new field was added to the struct 'dns_stub', an atomic integer,
namely pending_requests, which is used to keep how many queries are
created when resolving nameserver addresses that were missing in
the glue.
When the value of pending_requests is zero we know we can release
resources, adjust zone timers, dump to zone file, etc.
Extend GitLab CI with build and test jobs utilizing the --disable-atomic
configure switch as it is used to work around broken atomics support in
certain build toolchains.
This commit ensures that dnstap output files captured
by fstrm_capture are properly flushed before any attempt
on reading them with dnstap-read is done.
By reading fstrm-capture source code it was noticed that
signal SIGHUP is used to flush the capture file.
Add a +burst option to mdig so that we have a second to setup the
mdig calls then they run at the start of the next second.
RRL uses 'queries in a second' as a approximation to
'queries per second'. Getting the bursts of traffic to all happen in
the same second should prevent false negatives in the system test.
We now have a second to setup the traffic in. Then the traffic should
be sent at the start of the next second. If that still fails we
should move to +burst=<now+2> (further extend mdig) instead of the
implicit <now+1> as the trigger second.
(cherry picked from commit 92cdc7b6c7)
* digdelv test was just expecting default server EDNS buffer size to be
4096, the test needed only slight adjustment
(cherry picked from commit f1556f8c41)
(cherry picked from commit 6b303721f1ee472dc8ab2d1df03191a98d4e4e5e)
The DNS Flag Day 2020 aims to remove the IP fragmentation problem from
the UDP DNS communication. In this commit, we implement the minimal
required changes by changing the defaults for `edns-udp-size`,
`max-udp-size` and `nocookie-udp-size` to `1232` (the value picked by
DNS Flag Day 2020).
(cherry picked from commit bb990030d3)
(cherry picked from commit df06773f9a73e4a4bb0b5e7f4bd8e40394e64032)
Certain parts of the existing documentation for the "rrset-order"
statement are incorrect, others are ambiguous. Rework the relevant
section of the ARM to make it clear and up-to-date with the source code.
(cherry picked from commit 2ac04dc930)
This commit fix the problems that arose when moving the dns_message_t
object from fetchctx_t to the query structure.
Since the lifetime of query objects are different than that of a
fetchctx and the dns_message_t object held by the query may be being
used by some external module, e.g. validator, even after the query may
have been destroyed, propery handling of the references to the message
were added in this commit to avoid accessing an already destroyed
object.
Specifically, in resquery_response(), a reference to the message is
attached at the beginning of the function and detached at the end, since
a possible call to fctx_cancelquery() would release the dns_message_t
object, and in the next lines of code a call to add_bad() would require
a valid pointer to the same object.
In valcreate() a new reference is attached to the message object, this
ensures that if the corresponding query object is destroyed before the
validator attempts to access it, no invalid pointer access occurs.
In validated() we have to attach a new reference to the message, since
we destroy the validator object at the beginning of the function, and we
need access to the message in the next lines of the same function.
The assertion failure REQUIRE(msg->state == DNS_SECTION_ANY),
caused by calling dns_message_setclass within function resquery_response()
in resolver.c, was happening due to wrong management of dns message_t
objects used to process responses to the queries issued by the resolver.
Before the fix, a resolver's fetch context (fetchctx_t) would hold
a pointer to the message, this same reference would then be used over all
the attempts to resolve the query, trying next server, etc... for this to work
the message object would have it's state reset between each iteration, marking
it as ready for a new processing.
The problem arose in a scenario with many different forwarders configured,
managing the state of the dns_message_t object was lacking better
synchronization, which have led it to a invalid dns_message_t state in
resquery_response().
Instead of adding unnecessarily complex code to synchronize the object,
the dns_message_t object was moved from fetchctx_t structure to the
query structure, where it better belongs to, since each query will produce
a response, this way whenever a new query is created an associated
dns_messate_t is also created.
This commit deals mainly with moving the dns_message_t object from fetchctx_t
to the query structure.
When building with "--enable-native-pkcs11 --with-openssl", OpenSSL
support is automatically disabled in favor of native PKCS#11:
checking for OpenSSL library... use of native PKCS11 instead
However, adding "--enable-openssl-hash" to the above two switches causes
the build to fail:
checking for OpenSSL library... use of native PKCS11 instead
disabled because of native PKCS11
checking for using OpenSSL for hash functions... configure: error: No OpenSSL for hash functions
In other words, "--with-openssl" and "--enable-openssl-hash" are not
behaving consistently when used together with "--enable-native-pkcs11".
Fix by automatically disabling OpenSSL hashing support when native
PKCS#11 support is enabled.
PKCS#11 support in BIND requires dlopen() support from the operating
system and thus building with "--enable-native-pkcs11 --without-dlopen"
should not be possible. Add an Autoconf check which enforces that
constraint. Adjust the pairwise testing model accordingly.
(cherry picked from commit 187dca9cf7)
The dotat() function has been changed to send the TAT
query asynchronously, so there's no lock order loop
because we initialize the data first and then we schedule
the TAT send to happen asynchronously.
This breaks following lock-order loops:
zone->lock (dns_zone_setviewcommit) while holding view->lock
(dns_view_setviewcommit)
keytable->lock (dns_keytable_find) while holding zone->lock
(zone_asyncload)
view->lock (dns_view_findzonecut) while holding keytable->lock
(dns_keytable_forall)
(cherry picked from commit 3c4b68af7c)
Pairwise testing is a test case generation technique based on the
observation that most faults are caused by interactions of at most two
factors. For BIND, its configure options can be thought of as such
factors.
Process BIND configure options into a model that is subsequently
processed by the PICT tool in order to find an effective test vector.
That test vector is then used for configuring and building BIND using
various combinations of configure options.
(cherry picked from commit 420986bf18)
isc_meminfo_totalphys() would return invalid memory size when sysconf()
call would fail, because ((size_t)-1 * -1) is very large number.
(cherry picked from commit 79ca724d46)
ret->link.next is tested to see if it is NULL unlocked
to avoid obtaining taillock when it is not nexessary then
retested once the taillock is obtained.
The old code was not thread safe w.r.t. to the use of these variable.
We now only set them at the start of execution and copy them to
the message structure so they can be safely updated. This is the
minimal change to make them thread safe.
gcov started to fail after isc-projects/bind9!3991 when generating HTML
report with:
Traceback (most recent call last):
File "/usr/bin/gcovr", line 11, in <module>
load_entry_point('gcovr==4.1', 'console_scripts', 'gcovr')()
File "/usr/lib/python3/dist-packages/gcovr/__main__.py", line 588, in main
print_html_report(covdata, options)
File "/usr/lib/python3/dist-packages/gcovr/html_generator.py", line 275, in print_html_report
errors='replace')
FileNotFoundError: [Errno 2] No such file or directory: 'lib/dns/atomic.h'
The solution is to copy arch-specific isc/atomic.h where gcov expect it.
The "huge.zone" zone can take longer than 100 seconds to load when
running under a sanitizer. Increase the relevant zone load timeout to
prevent intermittent failures of the "rndc" system test.
(cherry picked from commit fd08918df5)
For some tests, we need to send big data streams (for TCP) or repeated
packets (for UDP), this commits adds `-r` option to packet.pl that sends
the same input <repeats> times using the specified protocol.
(cherry picked from commit dd46559a19)
While
if (isc_refcount_decrement() == 1) { // memory_order_release
isc_refcount_destroy(); // memory_order_acquire
...
}
is theoretically the most efficent in practice, using
memory_order_acq_rel produces the same code on x86_64 and doesn't
trigger tsan data races (which use a idealistic model) if
isc_refcount_destroy() is not called immediately. In fact
isc_refcount_destroy() could be removed if we didn't want
to check for the count being 0 when isc_refcount_destroy() is
called.
https://stackoverflow.com/questions/49112732/memory-order-in-shared-pointer-destructor
(cherry picked from commit 6278899a38)
Shifting (signed) integer left could trigger undefined behaviour when
the shifted value would overflow into the sign bit (e.g. 2048).
The issue was found when using AFL++ and UBSAN:
message.c:2274:33: runtime error: left shift of 2048 by 20 places cannot be represented in type 'int'
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior message.c:2274:33 in
(cherry picked from commit a347641782)
sockaddr.c:147:49: error: pointer targets in passing argument 2 of ‘isc__buffer_putmem’ differ in signedness
rdata.c:1780:30: error: pointer targets in passing argument 2 of ‘isc__buffer_putmem’ differ in signedness
(cherry picked from commit dd425254a7)
base32_decode_char() added a extra zero octet to the output
if the fifth character was a pad character. The length
of octets to copy to the output was set to 3 instead of 2.
(cherry picked from commit 6c7e50c267)
Previously .txt files with full backtrace may be identified as a
crashed test:
I:Core dumps were found for the following system tests:
I: core.19948-backtrace.txt
I: shutdown
Now .txt files are removed from the list.
Change 'run.sh.in' to match the core matching pattern in
'testsummary.sh'.
(cherry picked from commit c2dcd95966)
(cherry picked from commit 01119ac4f9)
To prevent problems with unit and system tarball tests being revealed
during release process, run these tests on schedules.
(cherry picked from commit 439fe9bc3c)
Hold a weak reference to the view so that it can't go away while
nta is performing its lookups. Cancel nta timers once all external
references to the view have gone to prevent them triggering new work.
(cherry picked from commit 0b2555e8cf)
Resolve "lib/isc/nothreads/include/isc/mutex.h:20:12: error: right-hand operand of comma expression has no effect"
See merge request isc-projects/bind9!3925
When pk11_numbits() is passed a user provided input that contains all
zeroes (via crafted DNS message), it would crash with assertion
failure. Fix that by properly handling such input.
The only arm64 runner we have at our disposal is suffering from
intermittent connectivity issues which make it unusable for extended
periods of time. Remove arm64 jobs from GitLab CI until we manage to
set up an arm64 runner with more reliable connectivity.
(cherry picked from commit 49f245f7c0)
Now that the log message has been printed set the result code to
DNS_R_FORMERR. We don't do this via dns_result_torcode() as we
don't want upstream errors to produce FORMERR if that processing
end with DNS_R_BADTSIG.
(cherry picked from commit 20488d6ad3)
Running system tests with root privileges is potentially dangerous.
Only allow it when explicitly requested (by building with
--enable-developer).
(cherry picked from commit 3ef106f69d)
Whenever an exact match is found by dns_rbt_findnode(),
the highest level node in the chain will not be put into
chain->levels[] array, but instead the chain->end
pointer will be adjusted to point to that node.
Suppose we have the following entries in a rpz zone:
example.com CNAME rpz-passthru.
*.example.com CNAME rpz-passthru.
A query for www.example.com would result in the
following chain object returned by dns_rbt_findnode():
chain->level_count = 2
chain->level_matches = 2
chain->levels[0] = .
chain->levels[1] = example.com
chain->levels[2] = NULL
chain->end = www
Since exact matches only care for testing rpz set bits,
we need to test for rpz wild bits through iterating the nodechain, and
that includes testing the rpz wild bits in the highest level node found.
In the case of an exact match, chain->levels[chain->level_matches]
will be NULL, to address that we must use chain->end as the start point,
then iterate over the remaining levels in the chain.
server might be created, but not yet fully initialized, when fatal
function is called. Check both server and task before attaching
exclusive task.
(cherry picked from commit c5e7152cf0)
Our GitLab Runner Custom executor scripts now use the "image" key
instead of the job name for determining the QCOW2 image to use for a
given CI job. Update .gitlab-ci.yml to reflect that change.
(cherry picked from commit 72201badf0)
it was possible for the count_newzones() function to try to
unlock view->new_zone_lock on return before locking it, which
caused a crash on shutdown.
(cherry picked from commit ed37c63e2b)
When "rndc reconfig" is run, named first configures a fresh set of views
and then tears down the old views. Consider what happens for a single
view with LMDB enabled; "envA" is the pointer to the LMDB environment
used by the original/old version of the view, "envB" is the pointer to
the same LMDB environment used by the new version of that view:
1. mdb_env_open(envA) is called when the view is first created.
2. "rndc reconfig" is called.
3. mdb_env_open(envB) is called for the new instance of the view.
4. mdb_env_close(envA) is called for the old instance of the view.
This seems to have worked so far. However, an upstream change [1] in
LMDB which will be part of its 0.9.26 release prevents the above
sequence of calls from working as intended because the locktable mutexes
will now get destroyed by the mdb_env_close() call in step 4 above,
causing any subsequent mdb_txn_begin() calls to fail (because all of the
above steps are happening within a single named process).
Preventing the above scenario from happening would require either
redesigning the way we use LMDB in BIND, which is not something we can
easily backport, or redesigning the way BIND carries out its
reconfiguration process, which would be an even more severe change.
To work around the problem, set MDB_NOLOCK when calling mdb_env_open()
to stop LMDB from controlling concurrent access to the database and do
the necessary locking in named instead. Reuse the view->new_zone_lock
mutex for this purpose to prevent the need for modifying struct dns_view
(which would necessitate library API version bumps). Drop use of
MDB_NOTLS as it is made redundant by MDB_NOLOCK: MDB_NOTLS only affects
where LMDB reader locktable slots are stored while MDB_NOLOCK prevents
the reader locktable from being used altogether.
[1] https://git.openldap.org/openldap/openldap/-/commit/2fd44e325195ae81664eb5dc36e7d265927c5ebc
(cherry picked from commit 53120279b5)
Make yaml.load_all() use yaml.SafeLoader to address a warning currently
emitted when bin/tests/system/dnstap/ydump.py is run:
ydump.py:28: YAMLLoadWarning: calling yaml.load_all() without Loader=... is deprecated, as the default Loader is unsafe. Please read https://msg.pyyaml.org/load for full details.
for l in yaml.load_all(f.stdout):
(cherry picked from commit 62f631f798)
The "krb5-devel" package on openSUSE Tumbleweed installs the
"krb5-config" binary into a custom prefix, which prevents BIND's
"configure" script from autodetecting it. Fix by specifying the path to
the "krb5-config" binary using --with-gssapi.
(cherry picked from commit 1be15f5900)
Add a note why we don't have a test case for the issue.
It is tricky to write a good test case for this if our tools are
not allowed to create signatures for unsupported algorithms.
(cherry picked from commit c6345fffe9)
Assign and then check node for NULL to address another thread
changing radix->head in the meantime.
Move 'node != NULL' check into while loop test to silence cppcheck
false positive.
Fix pointer != NULL style.
(cherry picked from commit 51f08d2095)
enough buffer space. Also change named_os_uname() prototype so
that it is now returning (const char *) rather than (char *). If
uname() is not supported on a UNIX build prepopulate unamebuf[]
with "unknown architecture".
(cherry picked from commit 4bc3de070f)
RBTDB node can now appear on the deadnodes lists following the changes
to decrement_reference in 4db29f1f7d to
defer checking of node->down when the tree write lock is not held. The
node should be unlinked instead.
(cherry picked from commit 569cc155b8680d8ed12db1fabbe20947db24a0f9)
The unittest.sh script tried to execute the unit tests when cmocka
development libraries was available, but kyua, the execution engine,
was not. Now, both need to be installed in the system.
(cherry picked from commit 762a3c866e)
We were passing client address to dns_resolver_createfetch as a pointer
and it was saved as a pointer. The client (with its address) could be
gone before the fetch is finished, and in a very odd scenario
log_formerr would call isc_sockaddr_format() which first checks if the
address family is valid (and at this point it still is), then the
sockaddr is cleared, and then isc_netaddr_fromsockaddr is called which
fails an assertion as the address family is now invalid.
(cherry picked from commit 175c4d9055)
It might be possible some pending task would run when kserver is already
cleaned up. Postpone gsstsig structures cleanup after task and timer
managers are destroyed. No pending threads are possible after it.
Make action in maybeshutdown only if doshutdown was not already called.
Might be called from getinput event.
(cherry picked from commit 2685e69be8)
In [RT #43367], the BIND 9 changed the strictness of address / prefix
length checks:
Check prefixes in acls to make sure the address and
prefix lengths are consistent. Warn only in
BIND 9.11 and earlier.
Unfortunately, a regression slipped in and the check was made an error
also in the BIND 9.11. This commit fixes the regression, but turning
the error into a warning.
The Danger script inspects differences between the current version of a
given merge request's target branch and the merge request branch. If
the latter falls behind the former, the Danger script will wrongly warn
about missing GitLab/RT identifiers because it incorrectly treats the
"+++" diff marker as an indication of the merge request adding new lines
to a file. Tweak the relevant conditional expression to prevent such
invalid warnings from being raised.
(cherry picked from commit e062812c38)
As GitLab Runner Docker executor caches Git repositories between jobs,
prevent the Danger script from attempting to update local refs to ensure
"git fetch" returns with an exit code of 0. Use the FETCH_HEAD ref for
determining the differences between the merge request branch and its
target branch.
(cherry picked from commit d558c4cb78)
Commits adding CHANGES entries and/or release notes do not need a commit
log message. Do not warn about a missing commit log message for such
commits to make the warning more meaningful.
(cherry picked from commit c13944ca46)
In case of a test failure we weren't tearing down sockets and tasks
properly, causing the test to hang instead of failing nicely.
(cherry picked from commit 4a8d9250cf)
Certain rules of the BIND development process are not codified anywhere
and/or are used inconsistently. In an attempt to improve this
situation, add a GitLab CI job which uses Danger Python to add comments
to merge requests when certain expectations are not met. Two categories
of feedback are used, only one of which - fail() - causes the GitLab CI
job to fail. Exclude dangerfile.py from Python QA checks as the way the
contents of that file are evaluated triggers a lot of Flake8 and PyLint
warnings.
(cherry picked from commit 36bb45a8b6)
As Python QA tools, BIND system test prerequisites, and documentation
building utilities are now all included in operating system images used
in GitLab CI, do not use pip for installing them in each CI job any
more.
(cherry picked from commit e3c217296d)
Add a system test that counts how many address fetches are made
for different numbers of NS records and checks that the number
are successfully limited.
If there are more that 5 NS record for a zone only perform a
maximum of 4 address lookups for all the name servers. This
limits the amount of remote lookup performed for server
addresses at each level for a given query.
as the update triggers by the rndc command to clear the signing records
may not have completed by the time the subsequent rndc command to test
that the records have been removed is commenced. Loop several times to
prevent false negative.
(cherry picked from commit 353018c0e5)
cppcheck 2.0 reports false positives about uninitialized variables in a
lot of places throughout BIND source code, e.g.:
bin/dig/host.c:386:24: error: Uninitialized variable: length [uninitvar]
printf("%.*s", (int)r.length, (char *)r.base);
^
Apparently cppcheck 2.0 has issues with processing (&var)->field syntax,
which is what the macros from lib/isc/include/isc/buffer.h are evaluated
to. This issue was reported upstream [1] and will hopefully be
addressed in a future cppcheck release.
In the meantime, to avoid modifying BIND source code in multiple places
just because of a static checker false positive, work around the issue
by adding intermediate variables to buffer macro definitions using a sed
invocation in the cppcheck job script.
[1] https://sourceforge.net/p/cppcheck/discussion/general/thread/122153e3c1/
(cherry picked from commit 481fa34e50)
Add whitespace to the regular expression used for extracting the GCC
version from "gcc --version" output so that it works properly with
multi-digit major version numbers.
(cherry picked from commit 3b48eec79f)
Commit 00f12220c0 broke the cppcheck job
in GitLab CI: when cppcheck fails, the script is immediately
interrupted, preventing cppcheck-htmlreport from being run. To ensure
the HTML report is generated when cppcheck fails, revert to invoking
cppcheck-htmlreport in the "after_script" part of the job.
(cherry picked from commit cb2037ee9d)
There a race between when the delta is logged and when the
server returns signed record. Retry the queries if the
lookups fail to meet expectations.
(cherry picked from commit 46c4e5d96f)
Modify all invocations of "w3m -O ascii ..." with their UTF-8
counterparts to ensure all text documentation generated from UTF-8
source files is also in UTF-8.
Although in util/api-checker.sh we create textual reports, we don't
preserve them in job artifacts, but we should.
We don't want to keep all HTML pages present in the project root, but
just those produced by ABI checker.
(cherry picked from commit b5ccf95b0a)
lib/dns/sdb.c:1145:warning: Either the condition '(sdb)!=((void*)0)' is
redundant or there is possible null pointer dereference: sdb."
lib/dns/sdb.c:1208: Either the condition '(node)!=((void*)0)' is
redundant or there is possible null pointer dereference: sdbnode.
the CHECK() macro resets result, so an error code from an earlier
view could be erased if the last view loaded had no errors.
(cherry picked from commit 7e73660206)
nzf_append is conditionally compiled and this is intended to
catch error introduced by changes to the called functions on all
systems before the changes are run through the CI.
(cherry picked from commit a66c6fc883)
Test zones with various escape sequences and filesystem seperator
characters.
* escaped double quote (\")
* escaped escape (\\)
* escaped decimal byte value (\032)
* slash seperator (/)
(cherry picked from commit 5ab9b5b1e6)
When we were printing quoted string, the double quotes where unescaped
leading to prematurely ending the quoted string.
(cherry picked from commit b02081d423)
named_os_openfile was being called with switch_user set to true
unconditionally leading to log messages about being unable to
switch user identity from named when regenerating the key.
(cherry picked from commit 071bc29962)
When running on Linux and system capabilities are available, named will
drop the extra capabilities before loading the configuration. This led
to spurious warnings from `seteuid()` because named already dropped
CAP_SETUID and CAP_GETUID capabilities.
The fix removes setting the effective uid/gid when capabilities are
available, and adds a check that we are running under the user we were
requested to run.
(cherry picked from commit 6c82e2af92)
Right before the release API version (LIBINTERFACE, LIBREVISION, LIBAGE)
for older and newer libraries tends to be the same. Given that, commit
hash can't be the determining factor here, Unix time of the commit
should suit us better and is placed after the API version. The commit
hash is preserved as it's useful to see it in the actual report.
(cherry picked from commit 313518dd3d)
The _getcwd() compatibility function on Microsoft CRT requires direct.h
header to pull a proper function prototype.
The (misleading) warning generated:
bin\named\server.c(1074): warning C4047: '==': 'int' differs in levels of indirection from 'void *'
The MSVC detects mismatch of const qualifiers in cfg_map_{first,next}clause
functions just in BIND 9.11. As this is harmless in this particular
case, just disable the warning for these two functions.
The warnings reported:
lib\isccfg\parser.c(2160): warning C4090: '=': different 'const' qualifiers
lib\isccfg\parser.c(2184): warning C4090: '=': different 'const' qualifiers
All our MSVS Project files share the same intermediate directory. We
know that this doesn't cause any problems, so we can just disable the
detection in the project files.
Example of the warning:
warning MSB8028: The intermediate directory (.\Release\) contains files shared from another project (dnssectool.vcxproj). This can lead to incorrect clean and rebuild behavior.
(cherry picked from commit b6c2012d93)
Our vcxproj files set the WarningLevel to Level3, which is too verbose
for a code that needs to be portable. That basically leads to ignoring
all the errors that MSVC produces. This commits downgrades the
WarningLevel to Level1 and enables treating warnings as errors for
Release builds. For the Debug builds the WarningLevel got upgraded to
Level4, and treating warnings as errors is explicitly disabled.
We should eventually make the code clean of all MSVC warnings, but it's
a long way to go for Level4, so it's more reasonable to start at Level1.
For reference[1], these are the warning levels as described by MSVC
documentation:
* /W0 suppresses all warnings. It's equivalent to /w.
* /W1 displays level 1 (severe) warnings. /W1 is the default setting
in the command-line compiler.
* /W2 displays level 1 and level 2 (significant) warnings.
* /W3 displays level 1, level 2, and level 3 (production quality)
warnings. /W3 is the default setting in the IDE.
* /W4 displays level 1, level 2, and level 3 warnings, and all level 4
(informational) warnings that aren't off by default. We recommend
that you use this option to provide lint-like warnings. For a new
project, it may be best to use /W4 in all compilations. This option
helps ensure the fewest possible hard-to-find code defects.
* /Wall displays all warnings displayed by /W4 and all other warnings
that /W4 doesn't include — for example, warnings that are off by
default.
* /WX treats all compiler warnings as errors. For a new project, it
may be best to use /WX in all compilations; resolving all warnings
ensures the fewest possible hard-to-find code defects.
1. https://docs.microsoft.com/en-us/cpp/build/reference/compiler-option-warning-level?view=vs-2019
(cherry picked from commit 789d253e3d)
Windows BIND releases produced by GitLab CI are built from Git
repositories, not from release tarballs, which means the "srcid" file is
not present in the top source directory when MSBuild is invoked. This
causes the Git commit hash for such builds to be set to "unset_id".
Enable win32utils/Configure to try determining the commit hash for a
build by invoking Git on the build host if the "srcid" file is not
present (which is what its Unix counterpart does).
(cherry picked from commit 05e13e7caf)
Our python code didn't adhere to any coding standard. In this commit, we add
flame8 (https://pypi.org/project/flake8/), and pylint (https://www.pylint.org/).
There's couple of exceptions:
- ans.py scripts are not checked, nor fixed as part of this MR
- pylint's missing-*-docstring and duplicate-code checks have
been disabled via .pylintrc
Both exceptions should be removed in due time.
(cherry picked from commit ee534592e3)
This test asserts that option "deny-answer-aliases" works correctly
when forwarding requests.
As a matter of example, the behavior expected for a forwarder BIND
instance, having an option such as deny-answer-aliases { "domain"; }
is that when forwarding a request for *.anything-but-domain, it is
expected that it will return SERVFAIL if any answer received has a CNAME
for "*.domain".
BIND wasn't honoring option "deny-answer-aliases" when configured to
forward queries.
Before the fix it was possible for nameservers listed in "forwarders"
option to return CNAME answers pointing to unrelated domains of the
original query, which could be used as a vector for rebinding attacks.
The fix ensures that BIND apply filters even if configured as a forwarder
instance.
ORACLE MySQL 8.0 has dropped the my_bool type, so we need to reinstate
it back when compiling with that version or higher. MariaDB is still
keeping the my_bool type. The numbering between the two (MariaDB 5.x
jumped to MariaDB 10.x) doesn't make the life of the developer easy.
(cherry picked from commit c6d5d5c88f)
This is the warning:
In file included from print_test.c:47:
./../print.c:203:9: warning: Although the value stored to 'neg' is used in the enclosing expression, the value is never actually read from 'neg'
dot = neg = space = plus = left = zero = alt = h = l = q = z = 0;
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 warning generated.
Most build/test job names already contain a "clang", "gcc", or "msvc"
prefix which indicates the compiler used for a given job. Apply that
naming convention to all build/test job names.
(cherry picked from commit 0c898084cd)
Multiple YAML keys have identical values for both TSAN unit test job
definitions. Extract these common keys to a YAML anchor and use it in
TSAN unit test job definitions to reduce code duplication.
(cherry picked from commit 84463f33bf)
Definitions of jobs running unit tests under TSAN contain an
"after_script" YAML key. Since the "unit_test_job" anchor is included
in those job definitions before "after_script" is defined, the
job-specific value of that key overrides the one defined in the included
anchor. This prevents "kyua report-html" from being run for TSAN unit
test jobs. Moving the invocation of "kyua report-html" to the "script"
key in the "unit_test_job" anchor is not acceptable as it would cause
the exit code of that command to determine the result of all unit test
jobs and we need that to be the exit code of "make unit". Instead, add
"kyua report-html" invocations to the "after_script" key of TSAN unit
test job definitions to address the problem without affecting other job
definitions.
(cherry picked from commit 6ebce9425e)
Multiple YAML keys have identical values for both TSAN system test job
definitions. Extract these common keys to a YAML anchor and use it in
TSAN system test job definitions to reduce code duplication.
(cherry picked from commit a9aa295f1f)
Both "system_test_job" and "unit_test_job" YAML anchors contain a
"before_script" key. TSAN job definitions first specify their own value
of the "before_script" key and then include the aforementioned YAML
anchors, which results in the value of the "before_script" key being
overridden with the value specified by the included anchor. Given this,
remove "before_script" definitions specific to TSAN jobs as they serve
no practical purpose.
(cherry picked from commit 8ef01c7b50)
All assignments for the TSAN_OPTIONS variable are identical across the
entire .gitlab-ci.yml file. Define a global TSAN_OPTIONS_COMMON
variable and use it in job definitions to reduce code duplication.
(cherry picked from commit 6325c0993a)
The custom builds (oot, asan, tsan) were mostly built using Debian sid
amd64 image. The problem was that this image broke too easily, because
it's Debian "unstable" after all.
This commit introduces "base_image" that should be most stable with
extra bits on top (clang, coccinelle, cppcheck, ...). Currently, that
would be Debian buster amd64.
Other changes introduced by this commit:
* Change the default clang version to 10
* Run both ASAN and TSAN with both gcc and clang compilers
* Remove Clang Debian stretch i386 job
(cherry picked from commit 5f5721aa11)
These are mostly false positives, the clang-analyzer FAQ[1] specifies
why and how to fix it:
> The reason the analyzer often thinks that a pointer can be null is
> because the preceding code checked compared it against null. So if you
> are absolutely sure that it cannot be null, remove the preceding check
> and, preferably, add an assertion as well.
The 2 warnings reported are:
byname_test.c:308:34: warning: Access to field 'fwdtable' results in a dereference of a null pointer (loaded from variable 'view')
RUNTIME_CHECK(dns_fwdtable_add(view->fwdtable, dns_rootname,
^~~~~~~~~~~~~~
/builds/isc-projects/bind9/lib/isc/include/isc/util.h:318:52: note: expanded from macro 'RUNTIME_CHECK'
^~~~
/builds/isc-projects/bind9/lib/isc/include/isc/error.h:50:21: note: expanded from macro 'ISC_ERROR_RUNTIMECHECK'
((void)(ISC_LIKELY(cond) || \
^~~~
/builds/isc-projects/bind9/lib/isc/include/isc/likely.h:23:43: note: expanded from macro 'ISC_LIKELY'
^
1 warning generated.
--
./rndc.c:255:6: warning: Dereference of null pointer (loaded from variable 'host')
if (*host == '/') {
^~~~~
1 warning generated.
References:
1. https://clang-analyzer.llvm.org/faq.html#null_pointer
(cherry picked from commit ddd0d356e5)
The 3 warnings reported are:
os.c:872:7: warning: Although the value stored to 'ptr' is used in the enclosing expression, the value is never actually read from 'ptr'
if ((ptr = strtok_r(command, " \t", &last)) == NULL) {
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 warning generated.
--
rpz.c:1117:10: warning: Although the value stored to 'zbits' is used in the enclosing expression, the value is never actually read from 'zbits'
return (zbits &= x);
^ ~
1 warning generated.
--
openssleddsa_link.c:532:10: warning: Although the value stored to 'err' is used in the enclosing expression, the value is never actually read from 'err'
while ((err = ERR_get_error()) != 0) {
^ ~~~~~~~~~~~~~~~
1 warning generated.
(cherry picked from commit 262f087bcf)
There are several reason why remove Debian 8 from the CI:
* Debian 8 ("jessie") has been superseded by Debian 9 ("stretch").
* Regular security support updates have been discontinued as of
June 17th, 2018.
* Jessie LTS is supported from 17th June 2018 to June 30, 2020.
In other words, it's no longer officially supported by Debian security
team, but by the volunteer/paid contributor composed LTS team. And the
release will be discontinued in three months from now. We can use the
freed CI resources to bring new platforms or just to make the jobs run a
bit faster.
(cherry picked from commit 75f46cc3d1)
The environment variable MAKE has been replaced with MAKE_COMMAND,
because overriding MAKE variable also changed the definition of the MAKE
inside the Makefiles, and we want only a single wrapper around the whole
build process.
Previously, setting `MAKE` to `bear make` meant that `bear make` would
be run at every nested make invocation, which messed up the upcoming
automake transition as compile_commands.json would be generated in every
subdirectory instead of just having one central file at the top of the
build tree.
(cherry picked from commit de1a637a69)
All jobs now use solely the newer needs configuration to declare
dependencies between jobs:
needs:
- job: <foo>
artifacts: true
instead of combination of dependencies and needs which is deprecated.
This change completely unbundles the stages (alas the stages still needs
to stay because the job graph has to stay acyclic between the stages).
(cherry picked from commit 66ba808c1b)
When unit test fails, core file is created. Kyua's 'debug' command can
run GDB on it and provide backtrace. Unfortunately Kyua is picky about
location of these core files we opt to use custom Kyua fork and copy
core files from Kyua working directory to source tree and make it
available in GitLab.
(cherry picked from commit 94fa27e43f)
./configure needs util/check-make-install.in to be present in the source
directory in order to complete successfully. Make sure this file is
included in source tarballs created from the repository.
The libisc LIBINTERFACE bump for 9.11.17 is unnecessary.
A lot of headers were altered but the ABI tool did not report anything.
Trust the ABI tool on this and decrement LIBINTERFACE and increment
LIBREVISION.
Michal caught at the last moment that a CHANGES entry did
not have a GitLab issue/mr reference. This check was omitted from
the release process documentation. The wiki is updated and the
CHANGES file is updated in this commit.
Bumped the version file and added release line in CHANGES.
API files:
- lib/bind9/api:
No changes because only changes in comments.
- lib/dns/api:
Increment LIBINTERFACE because of the added field structure in
dns_struct_update.
- lib/isc/api:
Increment LIBINTERFACE because of the PKCS#11 replacement.
- lib/isccc/api:
No changes because no source code changes.
- lib/isccfg/api:
Increment LIBREVISION because of minor source code changes.
- lib/lwres/api:
No changes because no source code changes.
I decided no changes to README.md or the release notes were necessary.
Perflab graphs look sane.
On Windows, C11 localtime_r() and gmtime_r() functions are not
available. While localtime() and gmtime() functions are already thread
safe because they use Thread Local Storage, it's quite ugly to #ifdef
around every localtime_r() and gmtime_r() usage to make the usage also
thread-safe on POSIX platforms.
The commit adds wrappers around Windows localtime_s() and gmtime_s()
functions.
NOTE: The implementation of localtime_s and gmtime_s in Microsoft CRT
are incompatible with the C standard since it has reversed parameter
order and errno_t return type.
(cherry picked from commit 08f4c7d6c0)
some empty conditional branches which contained a semicolon were
"fixed" by clang-format to contain nothing. add comments to prevent this.
(cherry picked from commit 735be3b816)
To get rid of the currently used FreeBSD-specific executor, move FreeBSD
CI jobs to libvirt-based executors. Make the necessary tag and variable
adjustments.
(cherry picked from commit 80618b5378)
Since FreeBSD 12.1 is the current FreeBSD 12.x release, replace FreeBSD
12.0 GitLab CI jobs with their up-to-date counterparts.
(cherry picked from commit 4c68b56246)
Waiting for the reply message will ensure that all messages being
looked for exist in the logs at the time of checking. When the
test was only waiting for the send message there was a race between
grep and the ns1 instance of named logging that it had seen the
request.
(cherry picked from commit a38a324442)
Save 'i' to 'locknum' and use that rather than using
'header->node->locknum' when performing the deferred
unlock as 'header->node->locknum' can theoretically be
different to 'i'.
(cherry picked from commit 8dd8d48c9f)
ABI checker tools generate HTML and TXT API compatibility reports of
BIND libraries. Comparison is being done between two bind source trees
which hold built BIND.
In the CI one version is the reference version defined by
BIND_BASELINE_VERSION variable, the latter one is the HEAD of branch
under test.
(cherry picked from commit 49bc08e612)
OpenBSD virtual machines seem to affected particularly badly by other
activity happening on the host. This causes trouble around release
time: when multiple tags are pushed to the repository, a large number of
jobs is started concurrently on all CI runners. In extreme cases, this
causes the system test suite to run for about an hour (!) on OpenBSD
VMs, with multiple tests failing. We investigated the test artifacts
for all such cases in the past and the outcome was always the same: test
failures were caused by extremely slow I/O on the guest. We tried
various tricks to work around this problem, but nothing helped.
Given the above, stop running OpenBSD system test jobs for pending BIND
releases to prevent the results of these jobs from affecting the
assessment of a given release's readiness for publication. This change
does not affect OpenBSD build jobs. OpenBSD system test jobs will still
be run for scheduled and web-requested pipelines, to make sure we catch
any severe issues with test code on that platform sooner or later.
(cherry picked from commit 7b002cea83)
- Define the SLOT environment variable before starting the test. This
variable defaults to 0 and that does not work with SoftHSM 2.
- The system test expects the PIN environment variable to be set to
"1234" while bin/tests/prepare-softhsm2.sh sets it to "0000".
Update bin/tests/prepare-softhsm2.sh so that it sets the PIN to
"1234".
- Move contents of bin/tests/system/pkcs11/prereq.sh to
bin/tests/system/pkcs11/setup.sh as the former was creating a file
called "supported" that was getting removed by the latter before
bin/tests/system/pkcs11/tests.sh could access it.
- Fix typo in "have_ecx".
(cherry picked from commit 100a230e80f01a777b917b135b4bae9a4ac0e8ae)
cppcheck 1.90 reports the following false positives for
lib/dns/tests/rbt_serialize_test.c:
lib/dns/tests/rbt_serialize_test.c:412:12: warning: Either the condition 'base!=NULL' is redundant or there is pointer arithmetic with NULL pointer. [nullPointerArithmeticRedundantCheck]
p = base + (r % filesize);
^
lib/dns/tests/rbt_serialize_test.c:407:20: note: Assuming that condition 'base!=NULL' is not redundant
assert_true(base != NULL && base != MAP_FAILED);
^
lib/dns/tests/rbt_serialize_test.c:405:14: note: Assignment 'base=mmap(NULL,filesize,PROT_READ|PROT_WRITE,0|MAP_PRIVATE,fd,0)', assigned value is 0
base = mmap(NULL, filesize, PROT_READ|PROT_WRITE,
^
lib/dns/tests/rbt_serialize_test.c:412:12: note: Null pointer addition
p = base + (r % filesize);
^
lib/dns/tests/rbt_serialize_test.c:413:12: warning: Either the condition 'base!=NULL' is redundant or there is pointer arithmetic with NULL pointer. [nullPointerArithmeticRedundantCheck]
q = base + filesize;
^
lib/dns/tests/rbt_serialize_test.c:407:20: note: Assuming that condition 'base!=NULL' is not redundant
assert_true(base != NULL && base != MAP_FAILED);
^
lib/dns/tests/rbt_serialize_test.c:405:14: note: Assignment 'base=mmap(NULL,filesize,PROT_READ|PROT_WRITE,0|MAP_PRIVATE,fd,0)', assigned value is 0
base = mmap(NULL, filesize, PROT_READ|PROT_WRITE,
^
lib/dns/tests/rbt_serialize_test.c:413:12: note: Null pointer addition
q = base + filesize;
^
This is caused by cppcheck not understanding how cmocka's assert_true()
macro works. The problem being reported is a false positive: if mmap()
fails, the lines flagged by cppcheck will never be reached. Address the
problem by suppressing nullPointerArithmeticRedundantCheck warnings for
the affected lines.
cppcheck 1.90 reports the following issue for bin/named/query.c:
bin/named/query.c:6838:2: warning: %d in format string (no. 3) requires 'int' but the argument type is 'unsigned int'. [invalidPrintfArgType_sint]
snprintf(mbuf, sizeof(mbuf) - 1,
^
Tweak the format specifier for client->query.restarts to address the
problem.
cppcheck 1.90 reports some false positives for lib/dns/client.c:
lib/dns/client.c:1431:2: warning: Either the condition 'rctx==((void*)0)' is redundant or there is possible null pointer dereference: rctx. [nullPointerRedundantCheck]
rctx->rdataset = rdataset;
^
lib/dns/client.c:1416:11: note: Assuming that condition 'rctx==((void*)0)' is not redundant
if (rctx == NULL)
^
lib/dns/client.c:1415:9: note: Assignment 'rctx=isc__mem_get(mctx,sizeof(*rctx),"lib/dns/client.c",1415)', assigned value is 0
rctx = isc_mem_get(mctx, sizeof(*rctx));
^
lib/dns/client.c:1431:2: note: Null pointer dereference
rctx->rdataset = rdataset;
^
lib/dns/client.c:1438:2: warning: Either the condition 'rctx==((void*)0)' is redundant or there is possible null pointer dereference: rctx. [nullPointerRedundantCheck]
rctx->sigrdataset = sigrdataset;
^
lib/dns/client.c:1416:11: note: Assuming that condition 'rctx==((void*)0)' is not redundant
if (rctx == NULL)
^
lib/dns/client.c:1415:9: note: Assignment 'rctx=isc__mem_get(mctx,sizeof(*rctx),"lib/dns/client.c",1415)', assigned value is 0
rctx = isc_mem_get(mctx, sizeof(*rctx));
^
lib/dns/client.c:1438:2: note: Null pointer dereference
rctx->sigrdataset = sigrdataset;
^
lib/dns/client.c:1445:2: warning: Either the condition 'rctx==((void*)0)' is redundant or there is possible null pointer dereference: rctx. [nullPointerRedundantCheck]
rctx->client = client;
^
lib/dns/client.c:1416:11: note: Assuming that condition 'rctx==((void*)0)' is not redundant
if (rctx == NULL)
^
lib/dns/client.c:1415:9: note: Assignment 'rctx=isc__mem_get(mctx,sizeof(*rctx),"lib/dns/client.c",1415)', assigned value is 0
rctx = isc_mem_get(mctx, sizeof(*rctx));
^
lib/dns/client.c:1445:2: note: Null pointer dereference
rctx->client = client;
^
lib/dns/client.c:1827:2: warning: Either the condition 'ctx==((void*)0)' is redundant or there is possible null pointer dereference: ctx. [nullPointerRedundantCheck]
ctx->client = client;
^
lib/dns/client.c:1815:10: note: Assuming that condition 'ctx==((void*)0)' is not redundant
if (ctx == NULL)
^
lib/dns/client.c:1814:8: note: Assignment 'ctx=isc__mem_get(client->mctx,sizeof(*ctx),"lib/dns/client.c",1814)', assigned value is 0
ctx = isc_mem_get(client->mctx, sizeof(*ctx));
^
lib/dns/client.c:1827:2: note: Null pointer dereference
ctx->client = client;
^
All of them are caused by cppcheck not recognizing the relationship
between isc_mem_get() returning NULL and the result variable being set
to ISC_R_NOMEMORY (with a subsequent jump to a cleanup section).
Move "goto cleanup;" statements into error handling branches to prevent
cppcheck from generating these warnings.
cppcheck 1.89 enabled certain value flow analysis mechanisms [1] which
trigger null pointer dereference false positives that were previously
not reported. It seems that cppcheck no longer treats at least some
REQUIRE() assertion failures as fatal, so add extra assertion macro
definitions to lib/isc/include/isc/util.h that are only used when the
CPPCHECK preprocessor macro is defined; these definitions make cppcheck
1.89 behave as expected.
There is an important requirement for these custom definitions to work:
cppcheck must properly treat abort() as a function which does not
return. In order for that to happen, the __GNUC__ macro must be set to
a high enough number (because system include directories are used and
system headers compile attributes away if __GNUC__ is not high enough).
__GNUC__ is thus set to the major version number of the GCC compiler
used, which is what that latter does itself during compilation.
[1] https://github.com/danmar/cppcheck/commit/aaeec462e6d96bb70c2b1cf030979d09e2d7c959
(cherry picked from commit abfde3d543)
zone_needdump() could potentially not call zone_settimer() so
explitly call zone_settimer() as zone->resigntime could have
gone backward.
(cherry picked from commit 5ec57f31b0)
With RRSIG records no longer being signed with the full
sig-validity-interval we need to ensure the zone->resigntime
as it may need to be set to a earlier time.
(cherry picked from commit 5d1611afdc)
The downstream distributors of BIND 9 (Debian in this case) are in
process of removing xml2-config command from the libxml2-dev package
(see Debian Bug #949056 for details). The removal of the script will
make BIND 9 to fail to build from the source when --with-libxml2=yes is
specified or not link with libxml2 when --with-libxml2=auto is specified
and then fail ABI changes (Debian Bug #949056).
When --with-libxml2=<path>, the script checks for <path>/bin/xml2-config
and uses the specified path to link with libxml2. This has been kept to
retain backwards compatibility with systems that does not ship
pkg-config.
* CKR_CRYPTOKI_ALREADY_INITIALIZED: This value can only be returned by
`C_Initialize`. It means that the Cryptoki library has already been
initialized (by a previous call to `C_Initialize` which did not have a
matching `C_Finalize` call).
* CKR_FUNCTION_NOT_SUPPORTED: The requested function is not supported by this
Cryptoki library. Even unsupported functions in the Cryptoki API should have a
"stub" in the library; this stub should simply return the value
CKR_FUNCTION_NOT_SUPPORTED.
* CKR_LIBRARY_LOAD_FAILED: The Cryptoki library could not load a dependent
shared library.
(cherry picked from commit f6922d6e78)
The OASIS pkcs11.h header has a restrictive license. Replace the
pkcs11.h pkcs11f.h and pkcs11t.h headers with pkcs11.h from p11-kit.
For source distribution, the license for the OASIS headers itself
doesn't pose any licensing problem when combined with MPL license, but
it possibly creates problem for downstream distributors of BIND 9.
(cherry picked from commit c47fad2431)
* ctx needs to be destroyed before it is regenerated.
* emit the name of the signature to be replaced.
* cleanup memory before asserting so post longjump doesn't detect a
memory leak.
* comment code.
(cherry picked from commit 3a8c8a2a31)
BSD sed does not recognize \s as a whitespace matching token. Make the
sed script in doc/arm/Makefile.in which ensures GitLab identifiers are
not split across lines portable by replacing \s with [[:space:]].
(cherry picked from commit b25e6b51f6)
Artifacts generated by the docs:sid:amd64 job need to be retained longer
than for other jobs as they are used for building bind.isc.org contents.
If these artifacts are removed too quickly, pipelines in the pages/bind
GitLab project start failing, preventing content updates from being
published. Increase lifetime of the relevant job artifacts to prevent
this from happening.
(cherry picked from commit 9751ba5a75)
Submissions to Coverity Scan should be limited to those originated from
release branches and only from a specific schedule which holds
COVERITY_SCAN_PROJECT_NAME and COVERITY_SCAN_TOKEN variables.
(cherry picked from commit 48530aa21395414b0f9788ea5ab158b2b09ab977)
This job requires two CI variables to be set:
- COVERITY_SCAN_PROJECT_NAME: project name, which is associated with
the BIND branch for which this job is executed, e.g. "bind-master",
- COVERITY_SCAN_TOKEN: project token.
(cherry picked from commit e8392e4bb911366b65cdc461ec907d9e1a68bf54)
The memory ordering in the rwlock was all wrong, I am copying excerpts
from the https://en.cppreference.com/w/c/atomic/memory_order#Relaxed_ordering
for the convenience of the reader:
Relaxed ordering
Atomic operations tagged memory_order_relaxed are not synchronization
operations; they do not impose an order among concurrent memory
accesses. They only guarantee atomicity and modification order
consistency.
Sequentially-consistent ordering
Atomic operations tagged memory_order_seq_cst not only order memory
the same way as release/acquire ordering (everything that
happened-before a store in one thread becomes a visible side effect in
the thread that did a load), but also establish a single total
modification order of all atomic operations that are so tagged.
Which basically means that we had no or weak synchronization between
threads using the same variables in the rwlock structure. There should
not be a significant performance drop because the critical sections were
already protected by:
while(1) {
if (relaxed_atomic_operation) {
break;
}
LOCK(lock);
if (!relaxed_atomic_operation) {
WAIT(sem, lock);
}
UNLOCK(lock)l
}
I would add one more thing to "Don't do your own crypto, folks.":
- Also don't do your own locking, folks.
As part of this commit, I have also cleaned up the #ifdef spaghetti,
and fixed the isc_atomic API usage.
The ThreadSanitizer found several possible data races in our rwlock
implementation. This commit convert .spins and .write_granted fields
to atomic.
(cherry picked from commit 1da0994ea4)
CID 1458403 (#1 of 1): Unchecked return value (CHECKED_RETURN)
8. check_return: Calling isc_socket_recv without checking
return value (as is done elsewhere 14 out of 17 times).
121 isc_socket_recv(sock, &dev->region, 1, task, my_recv, event->ev_arg);
CID 1458402 (#1 of 1): Unchecked return value (CHECKED_RETURN)
2. check_return: Calling isc_socket_recv without checking
return value (as is done elsewhere 14 out of 17 times).
149 isc_socket_recv(sock, &dev->region, 1, task, my_recv, event->ev_arg);
CID 1458401 (#1 of 1): Unchecked return value (CHECKED_RETURN)
6. check_return: Calling isc_socket_recv without checking
return value (as is done elsewhere 14 out of 17 times).
226 isc_socket_recv(dev->newsocket, ®ion, 1,
227 newtask, my_recv, event->ev_arg);
The code for specifying OpenSSL PKCS#11 engine as part of the label
(e.g. -l "pkcs11:token=..." instead of -E pkcs11 -l "token=...")
was non-functional. This commit just cleans the related code.
(cherry picked from commit a5c87d9d18)
Make sure carriage return characters are stripped from awk input to
enable the "dnssec" system test to pass on Windows.
(cherry picked from commit 2f694f0b77)
In system tests on Windows tool's local port can sometimes clash with
'named'. On Unix the system is poked for the minimal local port,
otherwise is set to 32768 as a sane minimum. For Windows we don't
poke but set a hardcoded limit; this change aligns the limit with
Unix and changes it to 32768.
(cherry picked from commit ed7fe5fae3b22d136f0a5a92ea3b67536b10a5ce)
Since OpenBSD 6.6 is the current OpenBSD release, replace OpenBSD 6.5
GitLab CI jobs with their up-to-date counterparts.
As CI jobs for OpenBSD 6.6 will be run by a generalized libvirt executor
rather than an OpenBSD-specific one, make the necessary tag and variable
adjustments as well.
(cherry picked from commit 99ed3a0e13)
- Add quotes before and after zone name when generating "addzone"
input so avoid "unexpected token" errors.
- Use a hex digest for zone filenames when the zone or view name
contains a slash.
- Test with a domain name containing a slash.
- Incidentally added 'catzhash.py' to contrib/scripts to generate
hash labels for catalog zones, as it was needed to write the test.
(cherry picked from commit dba0163dac)
Each system test can be marked as failed not only due to some tested
component(s) not behaving as expected, but also because of core dumps,
assertion failures, and/or ThreadSanitizer reports being found among its
artifacts. Make the system test summary list the tests which exhibit
such atypical symptoms to more clearly present the nature of problems
found.
(cherry picked from commit a8836b381f)
Update the API files.
- lib/dns:
- struct resolver has added elements, this is an interface change
and thus LIBINTERFACE is incremented, and LIBREVISION is reset.
- Since this also means an interface change since the last public
release, also reset LIBAGE.
- lib/isc:
- The library source code changed, so increment LIBREVISION.
- lib/isccfg:
- The library source code changed, so increment LIBREVISION.
Update other files:
- No changes needed to the README, this is a small bugfix release.
- Fix a bad version xml:id in the release notes.
The `rndc signing -clear` command cleans up the private-type records
that keep track of zone signing activity, but before this change it
did not tell the secondary servers that the zone has changed.
(cherry picked from commit f3f7b7df5d)
Function dns_view_findzonecut in view.c wasn't correctly handling
classes other than IN (chaos, hesiod, etc) whenever the name being
looked up wasn't in cache or in any of the configured zone views' database.
That resulted in a NULL fname being used in resolver.c:4900, which
in turn was triggering abort.
(cherry picked from commit 85555f29d7)
This is a bug I encountered when trying to schedule an algorithm
rollover. My plan, for a zone whose maximum TTL is 48h, was to sign
with the new algorithm and schedule a change of CDS records for more
than 48 hours in the future, roughly like this:
$ dnssec-keygen -a 13 -fk -Psync now+50h $zone
$ dnssec-keygen -a 13 $zone
$ dnssec-settime -Dsync now+50h $zone_ksk_old
However the algorithm 13 CDS was published immediately, which could
have made the zone bogus.
To reveal the bug using the `smartsign` test, this change just adds a
KSK with all its times in the future, so it should not affect the
existing checks at all. But the final check (that there are no CDS or
CDSNSKEY records after -Dsync) fails with the old `syncpublish()`
logic, because the future key's sync records appear early. With the
new `syncpublish()` logic the future key does not affect the test, as
expected, and it now passes.
(cherry picked from commit 4227b7969b)
(cherry picked from commit 2db5a2539a)
When both 'broken' and 'failed' test cases appear in unit test output
...
===> Broken tests
lib/isc/tests/socket_test:main -> broken: Test case timed out [300.022s]
===> Failed tests
lib/isc/tests/time_test:main -> failed: 2 of 6 tests failed [0.006s]
===> Summary
...
spurious '===>' string gets matched, that results in the following
error:
Usage error for command debug: '===>' is not a test case identifier (missing ':'?).
Following change makes sure the string is omitted.
I checked on FreeBSD and OpenBSD that the AWK construct is supported.
(cherry picked from commit 9e6f6156f7)
When retry_quiet() was backported to v9_11, it was only placed in
bin/tests/system/conf.sh.in, but not in bin/tests/system/conf.sh.win32.
This prevents every system test which employs this shell function either
directly or indirectly from ever succeeding on Windows. Fix by copying
the definition of retry_quiet() to bin/tests/system/conf.sh.win32.
Make sure carriage return characters are stripped from awk input to
enable the "dnssec" system test to pass on Windows.
(cherry picked from commit 451484b870)
* report when NSEC3PARAM is not yet present
* allow more time for NSEC3PARAM to become present
* adjust frequency failure message
(cherry picked from commit 17d25dbf47)
Split the "testing basic zone transfer functionality" into primary and
secondary parts to improve forensic logging.
(cherry picked from commit 14ef8b10af)
Add is_leaf and send_to_prune_tree to make the logic easier
to understand in cleanup_dead_nodes and decrement_reference.
(cherry picked from commit c6efc0e50f)
In decrement_reference only test node->down if the tree lock
is held. As node->down is not always tested in
decrement_reference we need to test that it is non NULL in
cleanup_dead_nodes prior to removing the node from the rbt
tree. Additionally it is not always possible to aquire the
node lock and reactivate a node when adding parent nodes.
Reactivate such nodes in cleanup_dead_nodes if required.
(cherry picked from commit 176b23b6cd)
Before this change, there was a missing blank line between the
negative trust anchors for one view, and the heading line for the next
view. This is because dns_ntatable_totext() omits the last newline.
There is an example of the incorrect output below; the fixed output
has a blank line before "Start view auth".
secure roots as of 21-Oct-2019 12:03:23.500:
Start view rec
Secure roots:
./RSASHA256/20326 ; managed
Negative trust anchors:
example.com: expiry 21-Oct-2019 13:03:15.000
Start view auth
Secure roots:
./RSASHA256/20326 ; managed
Negative trust anchors:
example.com: expiry 21-Oct-2019 13:03:07.000
(cherry picked from commit 5b600c2cd8)
Ensure BIND is continuously tested on Tumbleweed, a pure rolling release
version of openSUSE. This will allow BIND incompatibilities with latest
upstream versions of its dependencies to be caught more quickly.
(cherry picked from commit bd5dd1b58c60edb372bc6fa4eb39e355c5c76de4)
Since Alpine Linux 3.11 is the current Alpine Linux release, replace
Alpine Linux 3.10 GitLab CI jobs with their up-to-date counterparts.
(cherry picked from commit bebf353eb5)
5339. [bug] With some libmaxminddb versions, named could erroneously
match an IP address not belonging to any subnet defined
in a given GeoIP2 database to one of the existing
entries in that database. [GL #1552]
(cherry picked from commit a070defb18)
Only comparing the value of the integer passed as the last argument to
MMDB_lookup_sockaddr() against MMDB_SUCCESS is not enough to ensure that
an MMDB lookup was successful - the 'found_entry' field of the
MMDB_lookup_result_s structure returned by that function also needs to
be true or else the remaining contents of that structure should be
ignored as the lookup failed. Extend the relevant logical condition in
get_entry_for() to ensure the latter does not return incorrect MMDB
entries for IP addresses which do not belong to any subnet defined in a
given GeoIP2 database.
(cherry picked from commit 814da1c808)
musl libc's implementation of catgets() crashes when its first argument
is -1 instead of a proper message catalog descriptor. Prevent that from
happening by making isc_msgcat_get() return the default text if the
prior call to catopen() returns an error.
Make sure carriage return characters are stripped from sed input to
enable the "forward" system test to pass on Windows.
(cherry picked from commit 075613aea4)
Before, the zero system test could get stuck almost infinitely, because
the first test sends > 300 queries with 5 seconds timeout on each in
each pass. If named crashed early, it would took the test more than 4
hours to properly timeout.
This commit introduces a "watchdog" on the dig commands running in the
background and failing the test on timeout, failing any test if any dig
command fails to return successfully, and making the tests.sh script
shellcheck clean.
(cherry picked from commit 2a65a47f39)
Using retry_quiet to test that prefetch is disabled instead of a
standard loop with sleep 1 between each iteration.
(cherry picked from commit 994fc2e822)
These two tests were failing basically because in order for prefetching to
happen, the TTL for a given DNS record must be greater than or equal to
the prefetch config value + 9.
The previous TTL for both records was 10, while prefetch value in
configuration was 3, thus making only records with TTL >= 12 elligible
for prefetching.
TTL value for both records was adjusted to the value 13, and prefetch
value was set to 4 (inc by 1), so records with TTL (4 + 9) >= 13 are
elligible for prefetching.
Adjusting prefetch value to 4 gives the test 1 second more to avoid time
problems when sharing resources on a heavy loaded PC.
Also prefetch value in settings is now read by the script and used
by it to corrrectly calculate the amount of time needed to delay before
sending a request to trigger prefetch, adding a bit of flexibility to
fine tune the test in the future.
(cherry picked from commit a711d6f8c0)
The previous test had two problems:
1. It wasn't written specifically for testing what it was supposed to:
prefetch disabled.
2. It could fail in some circunstances if the computer's load is too
high, due to sleeps not taking parallel tests and cpu load into account.
The new test is testing prefetch disabled as follows:
1. It asks for a txt record for a given domain and takes note of the
record's TTL (which is 10).
2. It sleeps for (TTL - 5) = 5 seconds, having a window of 5 seconds to
issue new queries before the record expires from cache.
3. Three(3) queries are executed in a row, with a interval of 1 second
between them, and for each query we verify that the TTL in response is
less than the previous one, thus ensuring that prefetch is disabled (if
it were enabled this record would have been refreshed already and TTL
would be >= the first TTL).
Having a window of 5 seconds to perform 3 queries with a interval of 1
second between them gives the test a reasonable amount of time
to not suffer from a machine with heavy load.
(cherry picked from commit dd524cc893)
The system test helper function nextpart() always updates the "lines
read so far" marker ("<file>.prev") when it is called, which somewhat
limits its flexibility. Add two new helper functions, nextpartpeek()
and nextpartreset(), so that certain parts of log files can be easily
examined more than once. Add some documentation to help understand the
purpose of each function in the nextpart*() family.
(cherry picked from commit facb68b22e)
This mostly comprises of:
* changing the directories in subshell and not ignoring `cd` return code
* handling every error gracefully instead of ignoring the return code
(cherry picked from commit 57b6aeabd5)
"rndc signing -serial <value>" could take longer than a second to
complete. Loop waiting for update to succeed.
For tests where "rndc signing -serial <value>" is supposed to not
succeed, repeatedly test that we don't get the new serial, then
test that we have the old value. This should prevent false negatives.
(cherry picked from commit 13fa80ede8)
The oldsigs test was checking only for the validity of the A
a.oldsigs.example. resource record and associated DNSSEC signature while
the zone might not have been fully signed yet leading to validation
failures because of bogus signatures on the validation path.
This commit changes the test to test that all old signatures in the
oldsigs.example. zone were replaced and the zone is fully resigned
before running the main check.
(cherry picked from commit 519b047362)
GitLab issue and merge request numbers placed in release notes (in the
form of "#1234" for issues and "!5678" for merge requests) should not be
split across two lines. Extend the shell pipeline generating
doc/arm/notes.txt with a sed invocation which prevents such splitting.
(cherry picked from commit 2d00143ab1)
Libmaxmind does not provide any version macro for link time version.
Print at least runtime version library used, if linked.
(cherry picked from commit e6d7384c0d)
Since Fedora 31 is the current Fedora release, replace Fedora 30 GitLab
CI jobs with their up-to-date counterparts.
(cherry picked from commit b36f5496237f0dbb84d7541140e87d7da475cd36)
Add a GitLab CI job (which is run only if all other jobs in a pipeline
succeed) that builds a BIND release tarball, i.e. fetches the source
tarball from the tarball building job, creates Windows zips, puts
certain parts of BIND documentation into the appropriate places, and
packs it all up into a single tarball whose contents can be subsequently
signed and published.
(cherry picked from commit 5a4a6b5e91)
Add a system test job for binaries created by Visual Studio in the
"Debug" build configuration to GitLab CI so that they can be tested
along their "Release" counterparts when necessary.
(cherry picked from commit 2b1c8c54d1)
Add a Visual Studio build job using the "Debug" build configuration to
GitLab CI without enabling it for every pipeline as it takes about twice
as long to complete as its "Release" counterpart.
(cherry picked from commit 12564928a7)
Add a set of jobs to GitLab CI that create a BIND source tarball and
then build and test its contents. Run those extra jobs only when a tag
is pushed to the Git repository as they are only meant to be sanity
checks of BIND source tarball contents.
(cherry picked from commit 8d56749046)
The util/prepare-softhsm2.sh script is useful for initializing a working
SoftHSM environment which can be used by unit tests and system tests.
However, since it is a test-specific script, it does not really belong
in the util/ subdirectory which is mostly pruned during the BIND source
tarball creation process. Move the prepare-softhsm2.sh script to
bin/tests/ so that its location is more appropriate for its purpose and
also so that it does not get removed during the BIND source tarball
creation process, allowing it to be used for setting up test
environments for tarball-based builds.
(cherry picked from commit c0be772ebc)
Convert the logic (currently present in the form of "rm -rf" calls in
util/kit.sh) for removing files and directories which are tracked by Git
but redundant in release tarballs into a set of .gitattributes rules
which allow the same effect to be achieved using "git archive".
(cherry picked from commit 925ecb0aae)
In bin/tests/system/conf.sh.win32, the "lwresd" system test is
erroneously listed both in SEQUENTIALDIRS and PARALLELDIRS. Keep it
only in the former to prevent GitLab CI pipelines from consistently
failing on Windows due to SUBDIRS containing a different number of tests
than found in bin/tests/system/systests.output.
The autosign test has a test case where a DNSSEC maintaiend zone
has a set of DNSSEC keys without any timing metadata set. It
tests if named picks up the key for publication and signing if a
delayed dnssec-settime/loadkeys event has occured.
The test failed intermittently despite the fact it sleeps for 5
seconds but the triggered key reconfigure action should happen after
3 seconds.
However, the test output showed that the test query came in before
the key reconfigure action was complete (see excerpts below).
The loadkeys command is received:
15:38:36 received control channel command 'loadkeys delay.example.'
The reconfiguring zone keys action is triggered after 3 seconds:
15:38:39 zone delay.example/IN: reconfiguring zone keys
15:38:39 DNSKEY delay.example/NSEC3RSASHA1/7484 (ZSK) is now published
15:38:39 DNSKEY delay.example/NSEC3RSASHA1/7455 (KSK) is now published
15:38:39 writing to journal
Two seconds later the test query comes in:
15:38:41 client @0x7f1b8c0562b0 10.53.0.1#44177: query
15:38:41 client @0x7f1b8c0562b0 10.53.0.1#44177: endrequest
And 6 more seconds later the reconfigure keys action is complete:
15:38:47 zone delay.example/IN: next key event: 05-Dec-2019 15:48:39
This commit fixes the test by checking the "next key event" log has
been seen before executing the test query, making sure that the
reconfigure keys action has been complete.
This commit however does not fix, nor explain why it took such a long
time (8 seconds) to reconfigure the keys.
(cherry picked from commit 2e4273b55a)
(cherry picked from commit fb0ddd5bfe)
When libidn2 2.3.0+ is used, the "idna" system test fails as dig does
not fail as expected any more due to libidn2 2.3.0 using Unicode 11.0.0
IDNA mapping tables [1] instead of Unicode 6.3.0 ones which were used
until libidn2 2.2.0. Specifically, the SOCKS character (🧦) used in the
invalid input U-label check in the "idna" system test is a valid IDNA
character as per the IDNA mapping tables for Unicode 11.0.0. Fix the
relevant checks by using a different character (🟥) which is an invalid
IDNA character for all versions of Unicode released to date.
[1] https://gitlab.com/libidn/libidn2/commit/5eaafda64e733bfe15f66c8a39fd9bc2753ba8f2
The LC_ALL=C assignments in the "idna" system test, which were only
meant to affect a certain subset of checks, in fact persist throughout
all the subsequent checks in that system test. That affects the test's
behavior and is misleading.
When the "VARIABLE=value command ..." syntax is used in a shell script,
in order for the variable assignment to only apply to "command", the
latter must be an external binary; otherwise, the VARIABLE=value
assignment persists for all subsequent commands in a script:
$ cat foo.sh
#!/bin/sh
foo() {
/bin/sh bar.sh
}
BAR="baz0"
BAR="baz1" /bin/sh bar.sh
echo "foo: BAR=${BAR}"
BAR="baz2" foo
echo "foo: BAR=${BAR}"
$ cat bar.sh
#!/bin/sh
echo "bar: BAR=${BAR}"
$ /bin/sh foo.sh
bar: BAR=baz1
foo: BAR=baz0
bar: BAR=baz2
foo: BAR=baz2
$
Fix by saving the value of LC_ALL before the relevant set of checks in
the "idna" system test, restoring it afterwards, and dropping the
"LC_ALL=C command ..." syntax.
(cherry picked from commit 2ee7ff23ce)
The first step in all existing setup.sh scripts is to call clean.sh. To
reduce code duplication and ensure all system tests added in the future
behave consistently with existing ones, invoke clean.sh from run.sh
before calling setup.sh.
(cherry picked from commit d8905b7a9c)
Since the role of the bin/tests/system/clean.sh script has now been
reduced to calling a given system test's clean.sh script, remove the
former altogether and replace its only use with a direct invocation of
the latter.
(cherry picked from commit bf3eeac067)
Since files containing system test output are no longer stored in test
subdirectories, bin/tests/system/clean.sh no longer needs to take care
of removing the test.output file for a given test as testsummary.sh
already takes care of that and even if a test suite terminates
abnormally and another one is started, tee invoked without the -a
command line switch overwrites the destination file if it exists, so
leftover test.output.* files from previous test suite runs are not a
concern. Remove the -r command line switch and the code associated with
it from the relevant scripts.
(cherry picked from commit b4d37878f6)
Some clean.sh scripts contain overly broad file deletion wildcards which
cause the test.output file (used by the system test framework for
collecting output) in a given system test's directory to be erroneously
removed immediately after the test is started (due to setup.sh scripts
calling clean.sh at the beginning). This prevents the test's output
from being placed in bin/tests/system/systests.output at the end of a
test suite run and thus can lead to test failures being ignored. Fix by
storing each test's output in a test.output.<test-name> file in
bin/tests/system/, which prevents clean.sh scripts from removing it (as
they should only ever affect files contained in a given system test's
directory).
(cherry picked from commit b0916bba41)
At the end of each system test suite run, the system test framework
collects all existing test.output files from system test subdirectories
and produces bin/tests/system/systests.output from those files.
However, it does not check whether a test.output file was found for
every executed test. Thus, if the test.output file is accidentally
deleted by the system test itself (e.g. due to an overly broad file
removal wildcard present in clean.sh), its output will not be included
in bin/tests/system/systests.output. Since the result of each system
test suite run is determined by bin/tests/system/testsummary.sh, which
only operates on the contents of bin/tests/system/systests.output, this
can lead to test failures being ignored. Fix by ensuring the number of
test results found in bin/tests/system/systests.output is equal to the
number of tests run and triggering a system test suite failure in case
of a discrepancy between these two values.
(cherry picked from commit 3c3085be3c)
The previous code had some errors that would be triggered on platforms
without stdatomics but with support for xadd assembly instruction.
The major error was combining two uint32_t values from the
multifield atomic structure using a logical AND '&&' instead of a
bitwise OR '|'.
Some preprocessor rules were redundant and thus were simplified,
regarding the definition of ISC_STATS_USEMULTIFIELDS macro.
Correctly changed rwlock type to read on isc_stats_get_counter.
This prevents races on fctx->client whenever a new fetch joins a existing
fetch (by calling fctx_join) as it is now invariant for the active life of
fctx.
(cherry picked from commit 9ca6ad6311)
xmlInitThreads() and xmlCleanupThreads() are called from within
ns_statschannels_configure() and ns_statschannels_shutdown(),
respectively. Both of these functions are executed by worker threads,
not the main named thread. This causes ASAN to report memory leaks like
the following one upon shutdown (as long as named is asked to produce
any XML output over its configured statistics channels during its
lifetime):
Direct leak of 968 byte(s) in 1 object(s) allocated from:
#0 0x7f677c249cd8 in __interceptor_calloc /build/gcc/src/gcc/libsanitizer/asan/asan_malloc_linux.cc:153
#1 0x7f677bc1838f in xmlGetGlobalState (/usr/lib/libxml2.so.2+0xa838f)
The data mentioned in the above report is a libxml2 state structure
stored as thread-specific data. Such chunks of memory are automatically
released (by a destructor passed to pthread_key_create() by libxml2)
whenever a thread that allocated a given chunk exits. However, if
xmlCleanupThreads() is called by a given thread before it exits, the
destructor will not be invoked (due to xmlCleanupThreads() calling
pthread_key_delete()) and ASAN will report a memory leak. Thus,
xmlInitThreads() and xmlCleanupThreads() must not be called from worker
threads. Since xmlInitThreads() must be called on Windows in order for
libxml2 to work at all, move xmlInitThreads() and xmlCleanupThreads()
calls to the main named thread (which does not produce any XML output
itself) in order to prevent the memory leak from being reported by ASAN.
(cherry picked from commit b425b5d56e)
Loaded GeoIP2 databases are only released when named is shut down, but
not during server reconfiguration. This causes memory to be leaked
every time "rndc reconfig" or "rndc reload" is used, as long as any
GeoIP2 database is in use. Fix by releasing any loaded GeoIP2 databases
before reloading them. Do not call dns_geoip_shutdown() until server
shutdown as that function releases the memory context used for caching
GeoIP2 lookup results.
(cherry picked from commit 670afbe84a)
When loading the configuration fails, there might be already other tasks
running and calling OpenSSL library functions. The OpenSSL on_exit
handler is called when exiting the main process and there's a timing
race between the on_exit function that destroys OpenSSL allocated
resources (threads, locks, ...) and other tasks accessing the very same
resources leading to a crash in the system threading library. Therefore,
the fatal() function needs to request exlusive access to the task
manager to finish the already running tasks and exit only when no other
tasks are running.
(cherry picked from commit 952d7fde63)
Ensure any unexpected failure in the "tcp" system test causes it to be
immediately interrupted with an error to make the aforementioned test
more reliable. Since the exit code for "expr 0 + 0" is 1, the status
variable needs to be updated using arithmetic expansion.
(cherry picked from commit 9841635b7f)
Ensure all checks in the "tcp" system test are numbered, so that
forensic data is preserved in case of any failure.
(cherry picked from commit 2f4877d11c)
assert_int_equal() calls in bin/tests/system/tcp/tests.sh pass the found
value as the first argument and the expected value as the second
argument, while the function interprets its arguments the other way
round. Fix argument handling in assert_int_equal() to make sure the
error messages printed by that function are correct.
(cherry picked from commit 6bd1f68bef)
In the TCP high-water checks, "rndc stats" is run after ans6 reports
that it opened the requested number of TCP connections. However, we
fail to account for the fact that ns5 might not yet have called accept()
for these connections, in which case the counts output by "rndc stats"
will be off. To prevent intermittent "tcp" system test failures, allow
the relevant connection count checks to be retried (just once, after one
second, as that should be enough for any system to accept() a dozen TCP
connections under any circumstances).
(cherry picked from commit 1e22e052d0)
The dns_adb_beginudpfetch() is called only for UDP queries, but
the dns_adb_endudpfetch() is called for all queries, including
TCP. This messages the quota counting in adb.c.
(cherry picked from commit a5189eefa5)
Previously, there was no limit to the number of concurrently served
queries over one pipelined TCP connection; an unlimited number of
queries sent over a single TCP connection could have potentially
exhausted the server's resources.
glibc 2.30 deprecated the <sys/sysctl.h> header [1]. However, that
header is still used on other Unix-like systems, so only prevent it from
being used on Linux, in order to prevent compiler warnings from being
triggered.
[1] https://sourceware.org/ml/libc-alpha/2019-08/msg00029.html
(cherry picked from commit 65a8b53bd0)
Add a shell function which is used in the "tcp" system test, but has
been accidentally omitted from !2425. Make sure the function does not
change the value of "ret" itself, so that the caller can decide what to
do with the function's return value.
(cherry picked from commit 8bb7f1f2a1)
Test jitter distribution in NSEC3 dynamic zone and for a zone that has old
signatures. In both cases the generated signatures should be spread nicely.
(cherry picked from commit 540b90fd6c)
When doing regular signing expiry time is jittered to make sure
that the re-signing times are not clumped together. This expands
this behaviour to expiry times of dynamically added records.
When incrementally re-signing a zone use the full jitter range if
the server appears to have been offline for greater than 5 minutes
otherwise use a small jitter range of 3600 seconds. This will stop
the signatures becoming more clustered if the server has been off
line for a significant period of time (> 5 minutes).
Manually edits: resolve conflicts, replace isc_random_uniform
with isc_random_jitter.
(cherry picked from commit 6b2fd40269)
This variable will report the maximum number of simultaneous tcp clients
that BIND has served while running.
It can be verified by running rndc status, then inspect "tcp high-water:
count", or by generating statistics file, rndc stats, then inspect the
line with "TCP connection high-water" text.
The tcp-highwater variable is atomically updated based on an existing
tcp-quota system handled in ns/client.c.
(cherry picked from commit 66fe8627de)
Add {isc,ns}_stats_{update_if_greater,get_counter}() functions that
are used to set and collect high-water type of statistics.
(cherry picked from commit a544e2e300)
For TCP high-water work, we need to keep the used integer types widths
in sync.
Note: int_fast32_t is used on WIN32 platform
(cherry picked from commit 0fc98ef2d5)
Intertwining release notes from different BIND releases in a single XML
file has caused confusion in the past due to different (and often
arbitrary) approaches to keeping/removing release notes from older
releases on different BIND branches. Divide doc/arm/notes.xml into
per-version sections to simplify determining the set of changes
introduced by a given release and to make adding/reviewing release notes
less error-prone.
This fixes two scan-build false positives:
context.c:441:23: warning: The left operand of '!=' is a garbage value
|| sin.sin_port != htons(lwres_udp_port))
~~~~~~~~~~~~ ^
context.c:447:25: warning: The left operand of '!=' is a garbage value
|| sin6.sin6_port != htons(lwres_udp_port))
~~~~~~~~~~~~~~ ^
2 warnings generated.
The sin and sin6 structures are used as argument to recvfrom call and
they are properly filled by the call.
This fixes the following scan-build warning:
zt.c:325:12: warning: Value stored to 'zt' during its initialization is never read
dns_zt_t *zt = params->zt;
^~ ~~~~~~~~~~
1 warning generated.
This fixes a scan-build false-positive:
rbt_test.c:914:8: warning: Assigned value is garbage or undefined
node %= *names_count;
^ ~~~~~~~~~~~~
1 warning generated.
The remove_nodes() function is always called with correct arguments
(num_names is in <1;*names_count> range), so the modulo by zero cannot
happen, but nevertheless scan-build detects this and it's easy to fix.
(cherry picked from commit 4938f97c97)
This commit was cherry-picked from v9_14 and it fixes the following
scan-build warnings:
tsig.c:1030:20: warning: Assigned value is garbage or undefined
tsig.timesigned = querytsig.timesigned;
^ ~~~~~~~~~~~~~~~~~~~~
tsig.c:1092:26: warning: The right operand of '<' is a garbage value
if (response && bytes < querytsig.siglen)
^ ~~~~~~~~~~~~~~~~
2 warnings generated.
Related scan-build report:
dnstap_test.c:169:2: warning: Value stored to 'result' is never read
result = dns_test_makeview("test", &view);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
dnstap_test.c:193:2: warning: Value stored to 'result' is never read
result = dns_compress_init(&cctx, -1, dt_mctx);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2 warnings generated.
(cherry picked from commit e9acad638e)
The named_g_defaultdnstap was never used as the dnstap requires
explicit configuration of the output file.
Related scan-build report:
./server.c:3476:14: warning: Value stored to 'dpath' during its initialization is never read
const char *dpath = named_g_defaultdnstap;
^~~~~ ~~~~~~~~~~~~~~~~~~~~~
1 warning generated.
(cherry picked from commit 6decd14592)
Portion of the digdelv test are skipped on IPv6 due to extra quotes
around $TESTSOCK6: "I:digdelv:IPv6 unavailable; skipping".
Researched by @michal.
Regressed with 351efd8812.
(cherry picked from commit 1b6419f8a7)
EDNS mechanisms only apply to DNS over UDP. Thus, errors encountered
while sending DNS queries over TCP must not influence EDNS timeout
statistics.
(cherry picked from commit fce3c93ea2)
If a TCP connection fails while attempting to send a query to a server,
the fetch context will be restarted without marking the target server as
a bad one. If this happens for a server which:
- was already marked with the DNS_FETCHOPT_EDNS512 flag,
- responds to EDNS queries with the UDP payload size set to 512 bytes,
- does not send response packets larger than 512 bytes,
and the response for the query being sent is larger than 512 byes, then
named will pointlessly alternate between sending UDP queries with EDNS
UDP payload size set to 512 bytes (which are responded to with truncated
answers) and TCP connections until the fetch context retry limit is
reached. Prevent such query loops by marking the server as bad for a
given fetch context if the advertised EDNS UDP payload size for that
server gets reduced to 512 bytes and it is impossible to reach it using
TCP.
(cherry picked from commit 6cd115994e)
I was truncating zone files for experimental purposes when I found
that `named-compilezone | head` got stuck. The full command line that
exhibited the problem was:
dig axfr dotat.at |
named-compilezone -o /dev/stdout dotat.at /dev/stdin |
head
This requires a large enough zone to exhibit the problem, more than
about 70000 bytes of plain text output from named-compilezone.
I was running the command on Debian Stretch amd64.
This was puzzling since it looked like something was suppressing the
SIGPIPE. I used `strace` to examine what was happening at the hang.
The program was just calling write() a lot to print the zone file, and
the last write() hanged until I sent it a SIGINT.
During some discussion with friends, Ian Jackson guessed that opening
/dev/stdout O_RDRW might be the problem, and after some tests we found
that this does in fact suppress SIGPIPE.
Since `named-compilezone` only needs to write to its output file, the
fix is to omit the stdio "+" update flag.
(cherry picked from commit a87ccea032)
Ensure BIND can be tested on CentOS 8 in GitLab CI to more quickly catch
build and test errors on that operating system.
(cherry picked from commit dce1c05042)
cppcheck 1.89 emits a false positive for lib/isc/sha1.c:
lib/isc/sha1.c:273:16: error: Uninitialized variable: block [uninitvar]
(void)memmove(block, buffer, 64);
^
lib/isc/sha1.c:272:10: note: Assignment 'block=&workspace', assigned value is <Uninit>
block = &workspace;
^
lib/isc/sha1.c:273:16: note: Uninitialized variable: block
(void)memmove(block, buffer, 64);
^
This message started appearing with cppcheck 1.89 [1], but it will be
gone in the next release [2], so just suppress it for the time being.
[1] https://github.com/danmar/cppcheck/commit/af214e8212efa303e664920a468de00ee0b1fe3d
[2] https://github.com/danmar/cppcheck/commit/2595b826349a7ffbe1c958b806498b6e336bea33
Commit afa81ee4e4 omitted some spots in
the source tree which are still referencing the removed --with-cc-alg
"configure" option. Make sure the latter is removed completely.
(cherry picked from commit 428dcf3b49)
When a GitLab CI runner is not under load, a single OpenBSD system test
job completes in about 12 minutes, which is considered decent. However,
such jobs are usually multiplexed with other system test jobs on the
same host, which causes each of them to take even 40 minutes to
complete. Taking retries into account, this is completely unacceptable
for everyday use, so only start OpenBSD system test jobs for pipelines
created through GitLab's web interface and for pipelines created for Git
tags.
(cherry picked from commit 603e04563b)
Since the Windows build job does not use the files created as a result
of running "autoreconf -fi" in the "autoreconf:sid:amd64" job, set its
dependencies to an empty list.
Since it is currently not possible to use "needs: []" for jobs which do
not belong to the first stage of a pipeline, set the "needs" key for the
Windows build job to the "autoreconf:sid:amd64" job so that all build
jobs are started at the same time (without this change, the Windows
build job does not start until all jobs in the "precheck" stage are
finished).
As a side note, these changes also attempt to eliminate intermittent,
bogus GitLab error messages ("There has been a missing dependency
failure").
(cherry picked from commit dd97dfdc14)
The intended purpose of the "autoreconf:sid:amd64" GitLab CI job is to
run "autoreconf -fi" and then pass the updated files on to subsequent
non-Windows build jobs. However, the artifacts currently created by
that job only include files which are not tracked by Git. Since we
currently do track e.g. "configure" with Git, the aforementioned job is
essentially a no-op. Fix by manually specifying the files generated by
the "autoreconf:sid:amd64" job that should be passed on to subsequent
build jobs.
(cherry picked from commit e83b322f7f)
Ensure BIND can be tested on OpenBSD in GitLab CI to more quickly catch
build and test errors on that operating system.
Some notes:
- While GCC is packaged for OpenBSD, only old versions (4.2.1, 4.9.4)
are readily available and none of them is the default system
compiler, so we are only doing Clang builds in GitLab CI.
- Unit tests are currently not run on OpenBSD because it ships with an
old version of kyua which does not handle skipped tests properly.
These jobs will be added when we move away from using kyua in the
future as the test code itself works fine.
- All OpenBSD jobs are run inside QEMU virtual machines, using GitLab
Runner Custom executor.
(cherry picked from commit 07d2fcb544)
Consider the following Makefile:
foo:
false
On OpenBSD, the following happens for this Makefile:
- "make foo" returns 1,
- "make -k foo" returns 0,
- "make -k -j6 foo" returns 1.
However, if the .NOTPARALLEL pseudo-target is added to this Makefile,
"make -k -j6 foo" will return 0 as well.
Since bin/tests/Makefile contains the .NOTPARALLEL pseudo-target,
running "make -k -j6 test" from bin/tests/ on OpenBSD prevents any
errors from being reported through that command's exit code.
Work around the issue by running "make -k -j6 test" in the
bin/tests/system/ directory instead as bin/tests/system/Makefile does
not contain the .NOTPARALLEL pseudo-target and thus things work as
expected there.
(cherry picked from commit 6b5426e1a7)
'isc_commandline_index' is a global variable so it can theoretically
change result between if expressions. Save 'argv[isc_commandline_index]'
to local variable 'arg1' and use 'arg1 == NULL' in if expressions
instead of 'argc < isc_commandline_index + 1'. This allows clang
to correctly determine what code is reachable.
(cherry picked from commit 1b27ab8642)
From Cppcheck:
Passing NULL after the last typed argument to a variadic function leads to
undefined behaviour. The C99 standard, in section 7.15.1.1, states that if the
type used by va_arg() is not compatible with the type of the actual next
argument (as promoted according to the default argument promotions), the
behavior is undefined. The value of the NULL macro is an implementation-defined
null pointer constant (7.17), which can be any integer constant expression with
the value 0, or such an expression casted to (void*) (6.3.2.3). This includes
values like 0, 0L, or even 0LL.In practice on common architectures, this will
cause real crashes if sizeof(int) != sizeof(void*), and NULL is defined to 0 or
any other null pointer constant that promotes to int. To reproduce you might be
able to use this little code example on 64bit platforms. If the output includes
"ERROR", the sentinel had only 4 out of 8 bytes initialized to zero and was not
detected as the final argument to stop argument processing via
va_arg(). Changing the 0 to (void*)0 or 0L will make the "ERROR" output go away.
void f(char *s, ...) {
va_list ap;
va_start(ap,s);
for (;;) {
char *p = va_arg(ap,char*);
printf("%018p, %s\n", p, (long)p & 255 ? p : "");
if(!p) break;
}
va_end(ap);
}
void g() {
char *s2 = "x";
char *s3 = "ERROR";
// changing 0 to 0L for the 7th argument (which is intended to act as
// sentinel) makes the error go away on x86_64
f("first", s2, s2, s2, s2, s2, 0, s3, (char*)0);
}
void h() {
int i;
volatile unsigned char a[1000];
for (i = 0; i<sizeof(a); i++)
a[i] = -1;
}
int main() {
h();
g();
return 0;
}
(cherry picked from commit d8879af877)
This MR changes the default Debian sid build to wrap make with bear
that creates compilation database and use the compilation database
to run Cppcheck on the source files systematically.
The job is currently set to be allowed to fail as it will take some
time to fix all the Cppcheck detected issues.
(cherry picked from commit f55dc51f42)
This MR changes the default Debian sid build to wrap make with bear
that creates compilation database and use the compilation database
to run Cppcheck on the source files systematically.
The job is currently set to be allowed to fail as it will take some
time to fix all the Cppcheck detected issues.
The libidn2 library on Ubuntu Bionic is broken and idn2_to_unicode_8zlz() does't
fail when it should. This commit ensures that we don't run the system test for
valid A-label in locale that cannot display with the buggy libidn2 as it would
break the tests.
(cherry picked from commit c42e3583f9)
It is possible dig used ACE encoded name in locale, which does not
support converting it to unicode. Instead of fatal error, fallback to
ACE name on output.
(cherry picked from commit c8a871e908)
Bring the files describing Windows-specific aspects of building and
installing BIND up to date. Remove the parts which are either outdated
(e.g. information about libxml2 bugs) or inconvenient to keep up to date
in the long run (e.g. ARM chapter numbers).
(cherry picked from commit 646fcb733e)
Ensure BIND can be tested on Windows in GitLab to more quickly catch
build and test errors on that operating system.
Some notes:
- While build jobs are triggered for all pipelines, system test jobs
are not - due to the time it takes to run the complete system test
suite on Windows (about 20 minutes), the latter are only run for
pipelines created through GitLab's web interface and for pipelines
created for Git tags.
- Only the "Release" build configuration is currently used. Adding
"Debug" builds is a matter of extending .gitlab-ci.yml, but it was
not done for the time being due to questionable usefulness of
performing such builds in GitLab CI.
- Only a 64-bit build is performed. Adding support for 32-bit builds
is not planned to be implemented.
- Unit tests are still not run on Windows, but adding support for that
is on the roadmap.
- All Windows GitLab CI jobs are run inside Windows Server containers,
using the Custom executor feature of GitLab Runner as Windows Server
2016 is not supported by GitLab Runner's native Docker on Windows
executor and Windows Server 2019 is not yet widely available from
hosting providers.
- The Windows Docker image used by GitLab CI is not stored in the
GitLab Container Registry as it is over 27 GB in size and thus
passing it between GitLab and its runners is impractical.
- There is no vcvarsall.bat variant written in PowerShell and batch
scripts are no longer supported by GitLab Runner Custom executor, so
the environment variables set by vcvarsall.bat are injected back
into the PowerShell environment by processing the output of "set".
- Visual Studio parallel builds are a bit different than "make -jX"
builds as parallelization happens in two tiers: project parallelism
(controlled by the "/maxCpuCount" msbuild.exe switch) and compiler
parallelism (controlled by the "/MP" cl.exe switch). To limit the
total number of compiler processes spawned concurrently to a value
similar to the one used for Unix builds, msbuild.exe is allowed to
build at most 2 projects at once, each of which can spawn up to half
of BUILD_PARALLEL_JOBS worth of compiler processes. Using such
parameters is a fairly arbitrary decision taken to solve the
trade-off between compilation speed and runner load.
- Configuring network addresses in Windows Server containers is
tricky. Adding 10.53.0.1/24 and similar addresses to the vEthernet
interface created by Docker never causes ifconfig.bat to fail, but
in fact only one container can have any given IP address configured
at any given time (the request to add the same address in another
container is silently ignored). Thus, in order to allow multiple
system test jobs to be run in parallel, the addresses used in system
tests are configured on the loopback interfaces. Interestingly
enough, the addresses set on the loopback interfaces... persist
between containers. Fortunately, this is acceptable for the time
being and only requires ifconfig.bat failures to be ignored (as
ifconfig.bat will fail if it attempts to configure an already
existing address on an interface). We also need to wait for a brief
moment after calling ifconfig.bat as the addresses the latter
attempts to configure may not be immediately available after it
returns (and that causes runall.sh to error out). Finally, for some
reason we also need to signal that the DNS servers on each loopback
interface are to be configured using DHCP or else ifconfig.bat will
fail to add the requested addresses.
- Since named.pid files created by named instances used in system
tests contain Windows PIDs instead of Cygwin PIDs and various
versions of Cygwin "kill" react differently when passed Windows PIDs
without the -W switch, all "kill" invocations in GitLab CI need to
use that switch (otherwise they would print error messages which
would cause stop.pl to assume the process being killed died
prematurely). However, to preserve compatibility with older Cygwin
versions used in our other Windows test environments, we alter the
relevant scripts "on the fly" rather than in the Git repository.
- In the containers used for running system tests, Windows Error
Reporting is configured to automatically create crash dumps in
C:\CrashDumps. This directory is examined after the test suite is
run to ensure no crashes went under stop.pl's radar.
(cherry picked from commit ca36405a3d)
Make sure the CYGWIN environment variable is set whenever system tests
are run on Windows to prevent stop.pl from making incorrect assumptions
about the environment it is running in, which triggers e.g. false
reports about named instances crashing on shutdown when system tests are
run on Windows. This issue has not been caught earlier because the
CYGWIN environment variable was incidentally being set on a higher level
in our Windows test environments.
Error reporting for parallel system tests on Windows has been broken all
along: since all parallel.mk targets generated by parallel.sh pipe their
output through "tee", the return code from run.sh is lost and thus
running "make -f parallel.mk check" will not yield a non-zero return
code if some system tests fail. The same applies to runsequential.sh.
Yet, runall.sh on Windows only sets its return code to a non-zero value
if either "make -f parallel.mk check" or runsequential.sh returns a
non-zero return code. Fix by making runall.sh yield a non-zero return
code when testsummary.sh fails, which is the same approach as the one
used in the "test" target in bin/tests/system/Makefile.
(cherry picked from commit fed397c04b)
Until now, the build process for BIND on Windows involved upgrading the
solution file to the version of Visual Studio used on the build host.
Unfortunately, the executable used for that (devenv.exe) is not part of
Visual Studio Build Tools and thus there is no clean way to make that
executable part of a Windows Server container.
Luckily, the solution upgrade process boils down to just adding XML tags
to Visual Studio project files and modifying certain XML attributes - in
files which we pregenerate anyway using win32utils/Configure. Thus,
extend win32utils/Configure with three new command line parameters that
enable it to mimic what "devenv.exe bind9.sln /upgrade" does. This
makes the devenv.exe build step redundant and thus facilitates building
BIND in Windows Server containers.
(cherry picked from commit 0476e8f1ac)
Build configuration for the dnssec-cds Visual Studio project is absent
from the solution file template, which means the solution needs to be
upgraded using "devenv bind9.sln /upgrade" in order for the dnssec-cds
project to be built. Add the build configuration for dnssec-cds to the
solution file template so that upgrading the solution is not necessary
for building that project.
(cherry picked from commit 1d5259b0a0)
named-checkzone does not use libbind9. Update the Visual Studio project
file template for named-checkzone to reflect that, thus preventing
compilation issues during parallel builds.
(cherry picked from commit 918ebd9830)
Make stderr fully buffered on Windows to improve named performance when
it is logging to stderr, which happens e.g. in system tests. Note that:
- line buffering (_IOLBF) is unavailable on Windows,
- fflush() is called anyway after each log message gets written to the
default stderr logging channels created by libisc.
(cherry picked from commit c72da3497d)
BIND system tests are run in a Cygwin environment. Apparently Cygwin
shell sets the SEM_NOGPFAULTERRORBOX bit in its process error mode which
is then inherited by all spawned child processes. This bit prevents the
Windows Error Reporting dialog from being displayed, which I assume is
part of an effort to contain memory handling errors triggered by Cygwin
binaries in the Cygwin environment. Unfortunately, this also prevents
automatic crash dump creation by Windows Error Reporting and Cygwin
itself does not handle memory errors in native Windows processes spawned
from a Cygwin shell.
Fix by clearing the SEM_NOGPFAULTERRORBOX bit inside named if it is
started in a Cygwin environment, thus overriding the Cygwin-set process
error mode in order to enable Windows Error Reporting to handle all
named crashes.
(cherry picked from commit 3d4b17806f)
When libxml2 is to be used in a multi-threaded application, the
xmlInitThreads() function must be called before any other libxml2
function. This function does different things on various platforms and
thus one can get away without calling it on Unix systems, but not on
Windows, where it initializes critical section objects used for
synchronizing access to data structures shared between threads. Add the
missing xmlInitThreads() call to prevent crashes on affected systems.
Also add a matching xmlCleanupThreads() call to properly release the
resources set up by xmlInitThreads().
(cherry picked from commit a3c0b00ef6)
Addresses the database changing w/o the changes being done under task lock.
Fix: build the database before assigning it to the zone.
(cherry picked from commit 4e686f40e0)
Commit 0a20176ca6 is an overly broad
backport: in BIND 9.11, dnssec-dsfromkey still defaults to outputting
both SHA-1 and SHA-256 digests. Ensure the documentation matches the
code by correcting the former.
No problems have been observed on the FreeBSD GitLab CI runner during
the burn-in period, when FreeBSD jobs needed to be triggered manually.
Thus, make the FreeBSD jobs run automatically along other GitLab CI
jobs.
(cherry picked from commit f7bc95409d)
Fixing typos, typographical glitches. Added backticks around binaries,
modules, and libraries so it's more consistent. Added a paragraph with
ISC Security Policy.
(cherry picked from commit 4e2fdd7ee9)
`/usr/share/sgml/docbook/xsl-stylesheets` and `/usr/share/dblatex` are
places where docbook-style-xsl and, respectively, dblatex packages on
Red Hat systems put their XSL templates. Unless we hint this place it
has to be added to `./configure` manually (`--with-docbook-xsl=...`):
https://src.fedoraproject.org/rpms/bind/blob/master/f/bind.spec#_691.
On Fedora 30:
Before
```
./configure
...
checking for Docbook-XSL path... auto
checking for html/docbook.xsl... "not found"
checking for xhtml/docbook.xsl... "not found"
checking for manpages/docbook.xsl... "not found"
checking for html/chunk.xsl... "not found"
checking for xhtml/chunk.xsl... "not found"
checking for html/chunktoc.xsl... "not found"
checking for xhtml/chunktoc.xsl... "not found"
checking for html/maketoc.xsl... "not found"
checking for xhtml/maketoc.xsl... "not found"
checking for xsl/docbook.xsl... "not found"
checking for xsl/latex_book_fast.xsl... "not found"
```
After:
```
./configure
...
checking for Docbook-XSL path... auto
checking for html/docbook.xsl... /usr/share/sgml/docbook/xsl-stylesheets/html/docbook.xsl
checking for xhtml/docbook.xsl... /usr/share/sgml/docbook/xsl-stylesheets/xhtml/docbook.xsl
checking for manpages/docbook.xsl... /usr/share/sgml/docbook/xsl-stylesheets/manpages/docbook.xsl
checking for html/chunk.xsl... /usr/share/sgml/docbook/xsl-stylesheets/html/chunk.xsl
checking for xhtml/chunk.xsl... /usr/share/sgml/docbook/xsl-stylesheets/xhtml/chunk.xsl
checking for html/chunktoc.xsl... /usr/share/sgml/docbook/xsl-stylesheets/html/chunktoc.xsl
checking for xhtml/chunktoc.xsl... /usr/share/sgml/docbook/xsl-stylesheets/xhtml/chunktoc.xsl
checking for html/maketoc.xsl... /usr/share/sgml/docbook/xsl-stylesheets/html/maketoc.xsl
checking for xhtml/maketoc.xsl... /usr/share/sgml/docbook/xsl-stylesheets/xhtml/maketoc.xsl
checking for xsl/docbook.xsl... /usr/share/dblatex/xsl/docbook.xsl
checking for xsl/latex_book_fast.xsl... /usr/share/dblatex/xsl/latex_book_fast.xsl
```
(cherry picked from commit 0055b9616e)
Ensure BIND can be tested on FreeBSD in GitLab to more quickly catch
build and test errors on that operating system. Make the relevant jobs
optional until the CI environment supporting them is deemed stable
enough for continuous use.
FreeBSD jobs are run using the Custom executor feature of GitLab Runner.
Unlike the Docker executor, the Custom executor does not support the
"image" option and thus some way of informing the runner about the OS
version to use for a given job is necessary. Arguably the simplest way
of doing that without a lot of code duplication in .gitlab-ci.yml would
be to use a YAML template with a "variables" block specifying the
desired FreeBSD release to use, but including such a template in a job
definition would cause issues in case other variables also needed to be
set for that job (e.g. CFLAGS or EXTRA_CONFIGURE for build jobs). Thus,
only one FreeBSD YAML template is defined instead and the Custom
executor scripts on FreeBSD runners extract the OS version to use from
the CI job name. This allows .gitlab-ci.yml variables to be defined for
FreeBSD jobs in the same way as for Docker-based jobs.
(cherry picked from commit 51af91d007)
When kyua is called without the --logfile command line option, the log
file is created at a default location which is derived from the HOME
environment variable. On FreeBSD GitLab CI runners, /home is a
read-only directory and thus kyua invocations not using the --logfile
option fail when HOME is set to something beneath /home. Set --logfile
to /dev/null for all kyua invocations whose logs are irrelevant in order
to prevent kyua failures caused by HOME being non-writable.
(cherry picked from commit 1bffa602ba)
For newer versions of Xcode, "xcode-select --install" no longer installs
system headers into /usr/include (instead, they are installed in the
Xcode directory tree), so do not mention that path in the macOS section
of README to prevent confusion.
(cherry picked from commit 5af0b1d1d3)
Resolve "BIND | Potential for NULL pointer de-references plus memory leaks (CWE-476) in file 'dlz_mysqldyn_mod.c'"
See merge request isc-projects/bind9!2302
The native implementation's conversion from the uint8_t buffers to uint64_t now
follows the reference implementation that doesn't require aligned buffers.
when looking for a possible wildcard match in the RPZ summary database,
use an rbtnodechain to walk up label by label, rather than using the
node's parent pointer.
(cherry picked from commit 6e9be9a952)
GitLab 12.2 has introduced Directed Acyclic Graphs in the GitLab CI[1] that
allow jobs to run out-of-order and not wait for the whole previous stage to
complete.
1. https://docs.gitlab.com/ee/ci/directed_acyclic_graph/
(cherry picked from commit 04ce124279)
(cherry picked from commit 1d04597702)
In the ARM section about RPZ, add text explicitly stating that ACLs take
precedence over RPZ to prevent users from expecting RPZ actions to be
applied to queries coming from clients which are not permitted access to
the resolver by ACLs.
(cherry picked from commit 33bddbb5d1)
Commit 91307842b8 inadvertently mangled
the XML structure inside lib/isc/win32/libisc.vcxproj.filters.in, thus
breaking the Windows build. Add the missing XML tags to make Windows
builds work again.
Add a helper shell function, rndc_dumpdb(), which provides a convenient
way to call "rndc dumpdb" for a given server with optional additional
arguments. Since database dumping is an asynchronous process, the
function waits until the dump is complete before returning, which
prevents false positives in system tests caused by inspecting the dump
before its preparation is finished. The function also renames the dump
file before returning so that it does not get overwritten by subsequent
calls; this retains forensic data in case of an unexpected test failure.
(cherry picked from commit ab78e350dd)
There's a deadlock in BIND 9 code where (dns_view_t){ .lock } and
(dns_resolver_t){ .buckets[i].lock } gets locked in different order. When
view->weakrefs gets converted to a reference counting we can reduce the locking
in dns_view_weakdetach only to cases where it's the last instance of the
dns_view_t object.
Multiple resolvers in the "wildcard" system test are configured with a
single root hint: "ns.root-servers.nil", pointing to 10.53.0.1, which is
inconsistent with authoritative data served by ns1. This may cause
intermittent resolution failures, triggering false positives for the
"wildcard" system test. Prevent this from happening by making ns2, ns3,
and ns5 use root hints corresponding to the contents of ns1/root.db.in.
(cherry picked from commit dd430c3093)
The ns2 named instance in the "staticstub" system test is configured
with a single root hint commonly used in BIND system tests
(a.root-servers.nil with an address of 10.53.0.1), which is inconsistent
with authoritative data served by ns1. This may cause intermittent
resolution failures, triggering false positives for the "staticstub"
system test. Prevent this from happening by making ns1 serve data
corresponding to the contents of bin/tests/system/common/root.hint.
(cherry picked from commit 4b5e1da0e3)
Since Fedora 30 is the current Fedora release, replace Fedora 29 GitLab
CI jobs with their up-to-date counterparts.
(cherry picked from commit fac23cf939)
Ensure BIND is continuously tested on Alpine Linux as it is commonly
used as a base for Docker containers and employs a less popular libc
implementation, musl libc.
(cherry picked from commit 326a334b49)
"PST8PDT" is a legacy time zone name whose use in modern code is
discouraged. It so happens that using this time zone with musl libc
time functions results in different output than for other libc
implementations, which breaks the lib/isc/tests/time_test unit test.
Use the "America/Los_Angeles" time zone instead in order to get
consistent output across all tested libc implementations.
(cherry picked from commit f4daf6e0e7)
Appending output of a command to the same file as the one that command
is reading from is a dangerous practice. It seems to have accidentally
worked with all the awk implementations we have tested against so far,
but for BusyBox awk, doing this may result in the input/output file
being written to in an infinite loop. Prevent this from happening by
redirect awk output to a temporary file and appending its contents to
the original file in a separate shell pipeline.
(cherry picked from commit bb9c1654e2)
The Net::DNS Perl module needs the Digest::HMAC module to support TSIG.
However, since the latter is not a hard requirement for the former, some
packagers do not make Net::DNS depend on Digest::HMAC. If Net::DNS is
installed on a host but Digest::HMAC is not, the "xfer" system test
breaks in a very hard-to-debug way (ans5 returns TSIG RRs with empty
RDATA, which prevents TSIG-signed SOA queries and transfers from
working). Prevent this from happening by making the "xfer" system test
explicitly require Digest::HMAC apart from Net::DNS.
(cherry picked from commit b10d28d1e0)
The BusyBox version of awk treats some variables which other awk
implementations consider to be decimal values as octal values. This
intermittently breaks key event interval calculations in the "autosign"
system test, trigger false positives for it. Prevent the problem from
happening by stripping leading zeros from the affected awk variables.
(cherry picked from commit ad008f7dbf)
For some libc implementations, BUFSIZ is small enough (e.g. 1024 for
musl libc) to trigger compilation warnings about insufficient size of
certain buffers. Since the relevant buffers are used for printing DNS
names, increase their size to '(n + 1) * DNS_NAME_FORMATSIZE', where 'n'
is the number of DNS names which are printed to a given buffer. This
results in somewhat arbitrary, albeit nicely-aligned and large enough
buffer sizes.
(cherry picked from commit 3384455659)
Including <sys/errno.h> instead of <errno.h> raises a compiler warning
when building against musl libc. Always include <errno.h> instead of
<sys/errno.h> to prevent that compilation warning from being triggered
and to achieve consistency in this regard across the entire source tree.
(cherry picked from commit b5cd146033)
Make sure all unit tests include headers in a similar order:
1. Three headers which must be included before <cmocka.h>.
2. System headers.
3. UNIT_TESTING definition, followed by the <cmocka.h> header.
4. libisc headers.
5. Headers from other BIND libraries.
6. Local headers.
Also make sure header file names are sorted alphabetically within each
block of #include directives.
(cherry picked from commit 5381ac0fcc)
All unit tests define the UNIT_TESTING macro, which causes <cmocka.h> to
replace malloc(), calloc(), realloc(), and free() with its own functions
tracking memory allocations. In order for this not to break
compilation, the system header declaring the prototypes for these
standard functions must be included before <cmocka.h>.
Normally, these prototypes are only present in <stdlib.h>, so we make
sure it is included before <cmocka.h>. However, musl libc also defines
the prototypes for calloc() and free() in <sched.h>, which is included
by <pthread.h>, which is included e.g. by <isc/mutex.h>. Thus, unit
tests including "dnstest.h" (which includes <isc/mem.h>, which includes
<isc/mutex.h>) after <cmocka.h> will not compile with musl libc as for
these programs, <sched.h> will be included after <cmocka.h>.
Always including <cmocka.h> after all other header files is not a
feasible solution as that causes the mock assertion macros defined in
<isc/util.h> to mangle the contents of <cmocka.h>, thus breaking
compilation. We cannot really use the __noreturn__ or analyzer_noreturn
attributes with cmocka assertion functions because they do return if the
tested condition is true. The problem is that what BIND unit tests do
is incompatible with Clang Static Analyzer's assumptions: since we use
cmocka, our custom assertion handlers are present in a shared library
(i.e. it is the cmocka library that checks the assertion condition, not
a macro in unit test code). Redefining cmocka's assertion macros in
<isc/util.h> is an ugly hack to overcome that problem - unfortunately,
this is the only way we can think of to make Clang Static Analyzer
properly process unit test code. Giving up on Clang Static Analyzer
being able to properly process unit test code is not a satisfactory
solution.
Undefining _GNU_SOURCE for unit test code could work around the problem
(musl libc's <sched.h> only defines the prototypes for calloc() and
free() when _GNU_SOURCE is defined), but doing that could introduce
discrepancies for unit tests including entire *.c files, so it is also
not a good solution.
All in all, including <sched.h> before <cmocka.h> for all affected unit
tests seems to be the most benign way of working around this musl libc
quirk. While quite an ugly solution, it achieves our goals here, which
are to keep the benefit of proper static analysis of unit test code and
to fix compilation against musl libc.
(cherry picked from commit 59528d0e9d)
Resolvers in the "filter-aaaa" system test are configured with a single
root hint: "ns.rootservers.net", pointing to 10.53.0.1. However,
querying ns1 for "ns.rootservers.net" results in NXDOMAIN answers.
Since the TTL for the root hint is set to 0, it may happen that a
resolver's ADB will be asked to return any known addresses for
"ns.rootservers.net", but it will only have access to a cached NXDOMAIN
answer for that name and an expired root hint, which will result in a
resolution failure, triggering a false positive for the "filter-aaaa"
system test. Prevent this from happening by making all the root hints
consistent with authoritative data served by ns1.
(cherry picked from commit c19ebde14b)
Ensure BIND with dnstap support enabled is being continuously tested by
adding --enable-dnstap to the ./configure invocation used for CentOS 7
and Debian sid builds in GitLab CI.
(cherry picked from commit 2bf44c6cd4)
This commit changes the BIND cookie algorithms to match
draft-sury-toorop-dnsop-server-cookies-00. Namely, it changes the Client Cookie
algorithm to use SipHash 2-4, adds the new Server Cookie algorithm using SipHash
2-4. The change doesn't make the SipHash 2-4 to be the default algorithm, this
is up to the operator.
(cherry picked from commit 196b342bc9)
On DragonFly BSD, use the same commands for configuring network
interfaces used during system tests as on NetBSD and OpenBSD.
(cherry picked from commit 496397eb3f)
Move the macOS section of <isc/endian.h> to a lower spot as it is
believed not to be the most popular platform for running BIND. Add a
comment and remove redundant definitions.
(cherry picked from commit c727a31eab)
Instead of only supporting Linux, try making <isc/endian.h> support
other GNU platforms as well. Since some compilers define __GNUC__ on
BSDs (e.g. Clang on FreeBSD), move the relevant section to the bottom of
the platform-specific part of <isc/endian.h>, so that it only gets
evaluated when more specific platform determination criteria are not
met. Also include <byteswap.h> so that any byte-swapping macros which
may be defined in that file on older platforms are used in the fallback
definitions of the nonstandard hto[bl]e{16,32,64}() and
[bl]e{16,32,64}toh() conversion functions.
(cherry picked from commit a98c7408fc)
While Solaris does not support the nonstandard hto[bl]e{16,32,64}() and
[bl]e{16,32,64}toh() conversion functions, it does have some
byte-swapping macros available in <sys/byteorder.h>. Ensure these
macros are used in the fallback definitions of the aforementioned
nonstandard functions.
(cherry picked from commit 5b0f81e549)
Since the hto[bl]e{16,32,64}() and [bl]e{16,32,64}toh() conversion
functions are nonstandard, add fallback definitions of these functions
to <isc/endian.h>, so that their unavailability does not prevent
compilation from succeeding.
(cherry picked from commit 973d2991a0)
Current versions of DragonFly BSD, FreeBSD, NetBSD, and OpenBSD all
support the modern variants of functions converting values between host
and big-endian/little-endian byte order while older ones might not.
Ensure <isc/endian.h> works properly in both cases.
(cherry picked from commit 588c14d5c9)
Each individual test opened GeoIP databases but the database handles were never
closed. This commit moves the open/close from the individual unit tests into
the _setup and _teardown methods where they really belong.
(cherry picked from commit d1c7b79183)
(cherry picked from commit aad88d2c00)
The MSVS C compiler requires every struct to have at least one member.
The dns_geoip_databases_t structure had one set of members for
HAVE_GEOIP and a different set for HAVE_GEOIP2, and none when neither
API is in use.
This commit silences the compiler error by moving the declaration of
dns_geoip_databases_t to types.h as an opaque reference, and commenting
out the contents of geoip.h when neither version of GeoIP is enabled.
(cherry picked from commit 81fcde5953)
- revise mapping of search terms to database types to match the
GeoIP2 schemas.
- open GeoIP2 databases when starting up; close when shutting down.
- clarify the logged error message when an unknown database type
is configured.
- add new geoip ACL subtypes to support searching for continent in
country databases.
- map geoip ACL subtypes to specific MMDB database queries.
- perform MMDB lookups based on subtype, saving state between
queries so repeated lookups for the same address aren't necessary.
(cherry picked from commit 6e0b93e5a0)
(cherry picked from commit 0283ab7512)
- "--with-geoip" is used to enable the legacy GeoIP library.
- "--with-geoip2" is used to enable the new GeoIP2 library
(libmaxminddb), and is on by default if the library is found.
- using both "--with-geoip" and "--with-geoip2" at the same time
is an error.
- an attempt is made to determine the default GeoIP2 database path at
compile time if pkg-config is able to report the module prefix. if
this fails, it will be necessary to set the path in named.conf with
geoip-directory
- Makefiles have been updated, and a stub lib/dns/geoip2.c has been
added for the eventual GeoIP2 search implementation.
(cherry picked from commit fea6b5bf10)
(cherry picked from commit 6a7e805796)
When trying to extract the key ID from a key file name, some test code
incorrectly attempts to strip all leading zeros. This breaks tests when
keys with ID 0 are generated. Add a new helper shell function,
keyfile_to_key_id(), which properly handles keys with ID 0 and use it in
test code whenever a key ID needs to be extracted from a key file name.
(cherry picked from commit 7d6eaad1bd)
When printing a packet, dnstap-read checks whether its text form takes
up more than the 2048 bytes allocated for the output buffer by default.
If that is the case, the output buffer is automatically expanded, but
the truncated output is left in the buffer, resulting in malformed data
being printed. Clear the output buffer before expanding it to prevent
this issue from occurring.
(cherry picked from commit 3549abe81d)
In ISC-Bugs 45340, I wrote:
The Statistics channel offers links to Zones and Traffic.
Both produce valid data, but display as blank pages with
a web browser.
Zones never had XSL (I provided the original
implementation, but punted on the XSL).
Traffic has XSL, but it wasn't updated to reflect the
split between IPv4 and IPv6 data.
I've picked up enough XSL to fix my original omission,
and as penance for my sloth, fixed the Traffic bug as well.
(cherry picked from commit 96f0bbd4d5)
- when processing authoritative queries for ./NS, set 'gluedb' so
that glue will be included in the response, regardless of how
'minimal-responses' has been configured.
(cherry picked from commit e7684c7b64)
if "rndc reload" fails, the result code is supposed to be passed to
zone_postload, but for inline-signing zones, the result can be
overwritten first by a call to the ZONE_TRYLOCK macro. this can lead
to the partially-loaded unsigned zone being synced over to the signed
zone instead of being rejected.
(cherry picked from commit 0b792bd37b)
libidn2 2.2.0+ parses Punycode more strictly than older versions and
thus "dig +idnin +noidnout xn--19g" fails with libidn2 2.2.0+ but
succeeds with older versions.
We could preserve the old behavior by using the IDN2_NO_ALABEL_ROUNDTRIP
flag available in libidn2 2.2.0+, but:
- this change in behavior is considered a libidn2 bug fix [1],
- we want to make sure dig behaves as expected, not libidn2,
- implementing that would require additional configure.ac cruft.
Removing the problematic check appears to be the simplest solution as it
does not prevent the relevant block of checks in the "idna" system test
from achieving its purpose, i.e. ensuring dig properly handles invalid
U-labels.
[1] see upstream commit 241e8f486134793cb0f4a5b0e5817a97883401f5
(cherry picked from commit 60ce0ed411)
We increase recursclients when we attach to recursion quota,
decrease when we detach. In some cases, when we hit soft
quota, we might attach to quota without increasing recursclients
gauge. We then decrease the gauge when we detach from quota,
and it causes the statistics to underflow.
Fix makes sure that we increase recursclients always when we
succesfully attach to recursion quota.
BIND 9.11.0 has bumped DNS_CLIENTINFOMETHODS_VERSION and _AGE to
version 2 and 1 in the dlz_minimal.h because a member was addet to the
dnsclientinfo struct. It was found out that the new member is not
used anywhere and there are no accessor functions therefore the change
was reverted.
Later on, it was found out that the revert caused some problems to the
users of BIND 9, and thus this changes takes a different approach by
syncing the values other way around.
(cherry picked from commit 39344dfb3e)
In certain situations (e.g. a named instance crashing upon shutdown in a
system test which involves shutting down a server and restarting it
afterwards), a system test may succeed despite a named crash being
triggered. This must never be the case. Extend run.sh to mark a test
as failed if core dumps or log lines indicating assertion failures are
detected (the latter is only an extra measure aimed at test environments
in which core dumps are not generated; note that some types of crashes,
e.g. segmentation faults, will not be detected using this method alone).
(cherry picked from commit 7706f22924)
If ns1/setup.sh generates a key with ID 0, the "KEYID" token in
ns1/named.conf.in will be replaced with an empty string, causing the
following broken statement to appear in ns1/named.conf:
tkey-dhkey "server" ;
Such a statement triggers false positives for the "tkey" system test due
to ns1 being unable to start with a broken configuration file. Fix by
tweaking the regular expression used for removing leading zeros from the
key ID, so that it removes at most 4 leading zeros.
(cherry picked from commit 0b7b1161c2)
Compiling with -O3 triggers the following warnings with GCC 9.1:
task.c: In function ‘isc__taskmgr_create’:
task.c:1456:44: warning: ‘%04u’ directive output may be truncated writing between 4 and 10 bytes into a region of size 6 [-Wformat-truncation=]
1456 | snprintf(name, sizeof(name), "isc-worker%04u", i);
| ^~~~
task.c:1456:33: note: directive argument in the range [0, 4294967294]
1456 | snprintf(name, sizeof(name), "isc-worker%04u", i);
| ^~~~~~~~~~~~~~~~
task.c:1456:4: note: ‘snprintf’ output between 15 and 21 bytes into a destination of size 16
1456 | snprintf(name, sizeof(name), "isc-worker%04u", i);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
rrl.c: In function ‘debit_rrl_entry’:
rrl.c:602:35: error: ‘%d’ directive output may be truncated writing between 1 and 10 bytes into a region of size 9 [-Werror=format-truncation=]
602 | snprintf(buf, sizeof(buf), "age=%d", age);
| ^~
rrl.c:602:30: note: directive argument in the range [0, 2147483647]
602 | snprintf(buf, sizeof(buf), "age=%d", age);
| ^~~~~~~~
rrl.c:602:3: note: ‘snprintf’ output between 6 and 15 bytes into a destination of size 13
602 | snprintf(buf, sizeof(buf), "age=%d", age);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
rrl.c:602:35: error: ‘%d’ directive output may be truncated writing between 1 and 10 bytes into a region of size 9 [-Werror=format-truncation=]
602 | snprintf(buf, sizeof(buf), "age=%d", age);
| ^~
rrl.c:602:30: note: directive argument in the range [0, 2147483647]
602 | snprintf(buf, sizeof(buf), "age=%d", age);
| ^~~~~~~~
rrl.c:602:3: note: ‘snprintf’ output between 6 and 15 bytes into a destination of size 13
602 | snprintf(buf, sizeof(buf), "age=%d", age);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
rrl.c:602:35: error: ‘%d’ directive output may be truncated writing between 1 and 10 bytes into a region of size 9 [-Werror=format-truncation=]
602 | snprintf(buf, sizeof(buf), "age=%d", age);
| ^~
rrl.c:602:30: note: directive argument in the range [0, 2147483647]
602 | snprintf(buf, sizeof(buf), "age=%d", age);
| ^~~~~~~~
rrl.c:602:3: note: ‘snprintf’ output between 6 and 15 bytes into a destination of size 13
602 | snprintf(buf, sizeof(buf), "age=%d", age);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
private_test.c: In function ‘private_nsec3_totext_test’:
private_test.c:114:9: warning: array subscript 4 is outside array bounds of ‘uint32_t[1]’ {aka ‘unsigned int[1]’} [-Warray-bounds]
114 | while (*sp == '\0' && slen > 0) {
| ^~~
private_test.c:107:11: note: while referencing ‘salt’
107 | uint32_t salt;
| ^~~~
Prevent these warnings from being triggered by increasing the size of
the relevant arrays (task.c, rrl.c) and reordering conditions
(private_test.c).
(cherry picked from commit ce796ac1f4)
Compiling with -O3 triggers the following warning with GCC 8.3:
driver.c: In function ‘dlz_findzonedb’:
driver.c:198:29: warning: ‘%u’ directive output may be truncated writing between 1 and 5 bytes into a region of size between 0 and 99 [-Wformat-truncation=]
snprintf(buffer, size, "%s#%u", addr_buf, port);
^~
driver.c:198:25: note: directive argument in the range [0, 65535]
snprintf(buffer, size, "%s#%u", addr_buf, port);
^~~~~~~
driver.c:198:2: note: ‘snprintf’ output between 3 and 106 bytes into a destination of size 100
snprintf(buffer, size, "%s#%u", addr_buf, port);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Increase the size of the relevant array to prevent this warning from
being triggered.
(cherry picked from commit 44e6bb8b93)
Change the compiler optimization level for Debian sid build jobs from
-O2 to -O3 in order to enable triggering compilation warnings which are
not raised when -O2 is used.
(cherry picked from commit 3569487875)
this change silences a warning message and prevents the unwanted
use of smart quotes when using pandoc 2.7.1 to generate human-readable
versions of README and other markdown files.
(cherry picked from commit 3663f61e0e)
Backport "legacy" system test checks which are present in master and
v9_14 branches, but missing in the v9_11 branch, in order to improve the
consistency of this test across all maintained branches. Note that the
"ednsnotimp" check is expected to succeed with 9.11 whereas it is
expected to fail with 9.14 and later versions.
Backport named command line switches implemented in commit
c81c9660f5 as they are needed by the
"legacy" system checks which are currently present in master and v9_14
branches, but missing in the v9_11 branch.
Performing server setup checks using "+tries=3 +time=5" is redundant as
a single query is arguably good enough for determining whether a given
named instance was set up properly. Only use multiple queries with a
long timeout for resolution checks in the "legacy" system test, in order
to significantly reduce its run time (on a contemporary machine, from
about 1m45s to 0m40s).
(cherry picked from commit 47b850348c)
Send a test TCP query to the "plain" server during its setup check to
improve its consistency with the setup check for the "plain + no TCP"
server.
(cherry picked from commit bb939a03ff)
In the "legacy" system test, in order to make server setup checks more
consistent with each other, add further checks for either presence or
absence of the EDNS OPT pseudo-RR in the responses returned by the
tested named instances.
(cherry picked from commit 56ed1275c6)
Extract repeated dig and grep calls into two helper shell functions,
resolution_succeeds() and resolution_fails(), in order to reduce code
duplication in the "legacy" system test, emphasize the similarity
between all the resolution checks in that test, and make the conditions
for success and failure uniform for all resolution checks in that test.
(cherry picked from commit effd16ab25)
When testing named instances which are configured to drop outgoing UDP
responses larger than 512 bytes, querying with DO=1 may be used instead
of querying for large TXT records as the effect achieved will be
identical: an unsigned response for a SOA query will be below 512 bytes
in size while a signed response for the same query will be over 512
bytes in size. Doing this makes all resolution checks in the "legacy"
system test more similar. Add checks for the TC flag being set in UDP
responses which are expected to be truncated to further make sure that
tested named instances behave as expected.
(cherry picked from commit aaf81ca6ef)
One of the checks in the "legacy" system test inspects dig.out.1.test$n
instead of dig.out.2.test$n. Fix the file name used in that check.
(cherry picked from commit 3e7fa15ca3)
Sending TCP queries to test named instances with TCP support disabled
should cause dig output to contain the phrase "connection refused", not
"connection timed out", as such instances never open the relevant
sockets. Make sure that the "legacy" system test fails if the expected
phrase is not found in any of the relevant files containing dig output.
(cherry picked from commit 9491616e5c)
On some systems (namely Debian buster armhf) the readdir() call fails
with `Value too large for defined data type` unless the
_FILE_OFFSET_BITS=64 is defined. The correct way to fix this is to
get the appropriate compilation parameters from getconf system
interface.
(cherry picked from commit 4c7345bcb6)
If named is configured to perform DNSSEC validation and also forwards
all queries ("forward only;") to validating resolvers, negative trust
anchors do not work properly because the CD bit is not set in queries
sent to the forwarders. As a result, instead of retrieving bogus DNSSEC
material and making validation decisions based on its configuration,
named is only receiving SERVFAIL responses to queries for bogus data.
Fix by ensuring the CD bit is always set in queries sent to forwarders
if the query name is covered by an NTA.
(cherry picked from commit 5e80488270)
Previously, only a message about missing Python was printed, which was
misleading to many users. The new message clearly states that Python
AND PLY is required and prints basic instructions how to install PLY
package.
(cherry picked from commit 55b48700da)
already sent a recv/send event.
When doing isc_socket_cancel we need to purge the event that might
already be in flight. If it has been launched already we need
to inform it that it has to bail.
Resolve "Bind returning malformed packet error when sshfp record has fingerprint value less than 4 characters"
See merge request isc-projects/bind9!1906
this moves the creation of "parallel.mk" into a separate shell script
instead of bin/tests/system/Makefile. that shell script can now be
executed by runall.sh, allowing us to make use of the cygwin "make"
command, which supports parallel execution.
(cherry picked from commit bbae24c140)
Windows systems do not allow a trailing period in file names while Unix
systems do. When BIND system tests are run, the $TP environment
variable is set to an empty string on Windows systems and to "." on Unix
systems. This environment variable is then used by system test scripts
for handling this discrepancy properly.
In multiple system test scripts, a variable holding a zone name is set
to a string with a trailing period while the names of the zone's
corresponding dlvset-* and/or dsset-* files are determined using
numerous sed invocations like the following one:
dlvsets="$dlvsets dlvset-`echo $zone |sed -e "s/.$//g"`$TP"
In order to improve code readability, use zone names without trailing
periods and replace sed invocations with variable substitutions.
To retain local consistency, also remove the trailing period from
certain other zone names used in system tests that are not subsequently
processed using sed.
(cherry picked from commit da2c1b74ad)
in the "refactor tcpquota and pipeline refs" commit, the counting
of active interfaces was tightened in such a way that named could
fail to listen on an interface if there were more interfaces than
tcp-clients. when checking the quota to start accepting on an
interface, if the number of active clients was above zero, then
it was presumed that some other client was able to handle accepting
new connections. this, however, ignored the fact that the current client
could be included in that count, so if the quota was already exceeded
before all the interfaces were listening, some interfaces would never
listen.
we now check whether the current client has been marked active; if so,
then the number of active clients on the interface must be greater
than 1, not 0.
(cherry picked from commit 0b4e2cd4c3192ba88569dd344f542a8cc43742b5)
(cherry picked from commit d01023aaac)
- if the TCP quota has been exceeded but there are no clients listening
for new connections on the interface, we can now force attachment to the
quota using isc_quota_force(), instead of carrying on with the quota not
attached.
- the TCP client quota is now referenced via a reference-counted
'ns_tcpconn' object, one of which is created whenever a client begins
listening for new connections, and attached to by members of that
client's pipeline group. when the last reference to the tcpconn
object is detached, it is freed and the TCP quota slot is released.
- reduce code duplication by adding mark_tcp_active() function.
- convert counters to atomic.
(cherry picked from commit 7e8222378ca24f1302a0c1c638565050ab04681b)
(cherry picked from commit 4939451275722bfda490ea86ca13e84f6bc71e46)
(cherry picked from commit 13f7c918b8)
- ensure that tcpactive is cleaned up correctly when accept() fails.
- set 'client->tcpattached' when the client is attached to the tcpquota.
carry this value on to new clients sharing the same pipeline group.
don't call isc_quota_detach() on the tcpquota unless tcpattached is
set. this way clients that were allowed to accept TCP connections
despite being over quota (and therefore, were never attached to the
quota) will not inadvertently detach from it and mess up the
accounting.
- simplify the code for tcpquota disconnection by using a new function
tcpquota_disconnect().
- before deciding whether to reject a new connection due to quota
exhaustion, check to see whether there are at least two active
clients. previously, this was "at least one", but that could be
insufficient if there was one other client in READING state (waiting
for messages on an open connection) but none in READY (listening
for new connections).
- before deciding whether a TCP client object can to go inactive, we
must ensure there are enough other clients to maintain service
afterward -- both accepting new connections and reading/processing new
queries. A TCP client can't shut down unless at least one
client is accepting new connections and (in the case of pipelined
clients) at least one additional client is waiting to read.
(cherry picked from commit c7394738b2445c16f728a88394864dd61baad900)
(cherry picked from commit e965d5f11d3d0f6d59704e614fceca2093cb1856)
(cherry picked from commit 87d4311614)
Track pipeline groups using a shared reference counter
instead of a linked list.
(cherry picked from commit 513afd33eb17d5dc41a3f0d2d38204ef8c5f6f91)
(cherry picked from commit 9446629b73)
the TCP client quota could still be ineffective under some
circumstances. this change:
- improves quota accounting to ensure that TCP clients are
properly limited, while still guaranteeing that at least one client
is always available to serve TCP connections on each interface.
- uses more descriptive names and removes one (ntcptarget) that
was no longer needed
- adds comments
(cherry picked from commit 924651f1d5e605cd186d03f4f7340bcc54d77cc2)
(cherry picked from commit 55a7a458e3)
tcp-clients settings could be exceeded in some cases by
creating more and more active TCP clients that are over
the set quota limit, which in the end could lead to a
DoS attack by e.g. exhaustion of file descriptors.
If TCP client we're closing went over the quota (so it's
not attached to a quota) mark it as mortal - so that it
will be destroyed and not set up to listen for new
connections - unless it's the last client for a specific
interface.
(cherry picked from commit f97131d21b97381cef72b971b157345c1f9b4115)
(cherry picked from commit 9689ffc485)
Key IDs may accidentally match dig output that is not the key ID (for
example the RRSIG inception or expiration time, the query ID, ...).
Search for key ID + signer name should prevent that, as that is what
only should occur in the RRSIG record, and signer name always follows
the key ID.
(cherry picked from commit 83473b9758)
Remove sleep calls from test, rely on wait_for_log(). Make
wait_for_log() and dnssec_loadkeys_on() fail the test if the
appropriate log line is not found.
Slightly adjust the echo_i() lines to print only the key ID (not the
key name).
(cherry picked from commit 67f0635f3c)
One second may not be enough for an NSEC3 chain change triggered by an
UPDATE message to complete. Wait up to 10 seconds when checking whether
a given NSEC3 chain change is complete in the "nsupdate" system test.
(cherry picked from commit f8746cddbc)
In the "nsupdate" system test, do not sleep before checking results of
changes which are expected to be processed synchronously, i.e. before
nsupdate returns.
(cherry picked from commit 1c8e5ea333)
Make bin/tests/system/ifconfig.bat also configure addresses ending with
9 and 10, so that the script is in sync with its Unix counterpart.
Update comments listing the interfaces created by ifconfig.{bat,sh} so
that they do not include addresses whose last octet is zero (since an
address like 10.53.1.0/24 is not a valid host address and thus the
aforementioned scripts do not even attempt configuring them).
(cherry picked from commit b6c1cdfffe)
On Windows, the bin/tests/system/dnssec/signer/example.db.signed file
contains carriage return characters at the end of each line. Remove
them before passing the aforementioned file to the awk script extracting
key IDs so that the latter can work properly.
(cherry picked from commit e4280ed9f5)
As signals are currently not handled by named on Windows, instances
terminated using signals are not able to perform a clean shutdown, which
involves e.g. removing the lock file. Thus, waiting for a given
instance's lock file to be removed beforing assuming it is shut down
is pointless on Windows, so do not even attempt it.
(cherry picked from commit 761ba4514f)
5213. [bug] win32: Eliminated a race which allowed named.exe running
as a service to be killed prematurely during shutdown.
[GL #978]
(cherry picked from commit e7332343ed)
When a Windows service receives a request to stop, it should not set its
state to SERVICE_STOPPED until it is completely shut down as doing that
allows the operating system to kill that service prematurely, which in
the case of named may e.g. prevent the PID file and/or the lock file
from being cleaned up.
Set service state to SERVICE_STOP_PENDING when named begins its shutdown
and only report the SERVICE_STOPPED state immediately before exiting.
(cherry picked from commit 964749dfdb)
This tests both the cases when the DLV trust anchor is of an
unsupported or disabled algorithm, as well as if the DLV zone
contains a key with an unsupported or disabled algorithm.
(cherry picked from commit 3b7c849a3f)
The following changes were needed:
* Remove dnskey-sig-validity option (added in 9.12)
* Replace rndccmd, dig_with_opts with export variables
* Remove tests for CDNSKEY and CDS (in 9.11 always signed with ZSK)
The option `update-check-ksk` will look if both KSK and ZSK are
available before signing records. It will make sure the keys are
active and available. However, for operational practices keys may
be offline. This commit relaxes the update-check-ksk check and will
mark a key that is offline to be available when adding signature
tasks.
(cherry picked from commit 3cb8c49c73)
(cherry picked from commit b508cffeee3bfb8bc7dcf39db59ec3782a5d9e4c)
This commit adds a lengthy test where the ZSK is rolled but the
KSK is offline (except for when the DNSKEY RRset is changed). The
specific scenario has the `dnskey-kskonly` configuration option set
meaning the DNSKEY RRset should only be signed with the KSK.
A new zone `updatecheck-kskonly.secure` is added to test against,
that can be dynamically updated, and that can be controlled with rndc
to load the DNSSEC keys.
There are some pre-checks for this test to make sure everything is
fine before the ZSK roll, after the new ZSK is published, and after
the old ZSK is deleted. Note there are actually two ZSK rolls in
quick succession.
When the latest added ZSK becomes active and its predecessor becomes
inactive, the KSK is offline. However, the DNSKEY RRset did not
change and it has a good signature that is valid for long enough.
The expected behavior is that the DNSKEY RRset stays signed with
the KSK only (signature does not need to change). However, the
test will fail because after reconfiguring the keys for the zone,
it wants to add re-sign tasks for the new active keys (in sign_apex).
Because the KSK is offline, named determines that the only other
active key, the latest ZSK, will be used to resign the DNSKEY RRset,
in addition to keeping the RRSIG of the KSK.
The question is: Why do we need to resign the DNSKEY RRset
immediately when a new key becomes active? This is not required,
only once the next resign task is triggered the new active key
should replace signatures that are in need of refreshing.
(cherry-picked from commit c48b85d0a3c34480179d44e736e3e535dbae1001)
Add dns_rdata_totext() and dns_rdata_fromtext() to fromwire for
valid inputs to ensure that what we accept in dns_rdata_fromwire()
can be written out and read back in.
(cherry picked from commit 36f30f5731)
Some system tests assume dig's default setings are in effect. While
these defaults may only be silently overridden (because of specific
options set in /etc/resolv.conf) for BIND releases using liblwres for
parsing /etc/resolv.conf (i.e. BIND 9.11 and older), it is arguably
prudent to make sure that tests relying on specific +timeout and +tries
settings specify these explicitly in their dig invocations, in order to
prevent test failures from being triggered by any potential changes to
current defaults.
(cherry picked from commit b6cce0fb8b)
If the path to the source of random data is not passed explicitly to
dnssec-keygen or dnssec-signzone and the --with-randomdev compile-time
switch is not used, the aforementioned utilities will hang if the
default source of random data (/dev/random) runs out of entropy. Use
"-r $RANDFILE" to prevent that from happening in affected system tests.
When parsing message with DNS_MESSAGE_BESTEFFORT (used exclusively in
tools, never in named itself) if we hit an invalid SIG(0) in wrong
place we continue parsing the message, and put the sig0 in msg->sig0.
If we then hit another sig0 in a proper place we see that msg->sig0
is already 'taken' and we don't free name and rdataset, and we don't
set seen_problem. This causes an assertion failure.
This fixes that issue by setting seen_problem if we hit second sig0,
tsig or opt, which causes name and rdataset to be always freed.
(cherry picked from commit 51a55ddbb7)
This changes dns_dtdata struct to not expose data types from dnstap.pb-c.h to
prevent the need for including this header where not really needed.
(cherry picked from commit 8ccce7e24b)
Simply looking for the key ID surrounded by spaces in the tested
dnssec-signzone output file is not a precise enough method of checking
for signatures prepared using a given key ID: it can be tripped up by
cross-algorithm key ID collisions and certain low key IDs (e.g. 60, the
TTL specified in bin/tests/system/dnssec/signer/example.db.in), which
triggers false positives for the "dnssec" system test. Make key ID
extraction precise by using an awk script which operates on specific
fields.
(cherry picked from commit a40c60e4c1)
bin/tests/system/stop.pl only waits for the PID file to be cleaned up
while named cleans up the lock file after the PID file. Thus, the
aforementioned script may consider a named instance to be fully shut
down when in fact it is not.
Fix by also checking whether the lock file exists when determining a
given instance's shutdown status. This change assumes that if a named
instance uses a lock file, it is called "named.lock", and that if an
lwresd instance uses a lock file, it is called "lwresd.lock".
Also rename clean_pid_file() to pid_file_exists(), so that it is called
more appropriately (it does not clean up the PID file itself, it only
returns the server's identifier if its PID file is not yet cleaned up).
(cherry picked from commit c787a539d2)
MR !1141 broke the way stop.pl is invoked when start.pl fails:
- start.pl changes the working directory to $testdir/$server before
attempting to start $server,
- commit 27ee629e6b causes the $testdir
variable in stop.pl to be determined using the $SYSTEMTESTTOP
environment variable, which is set to ".." by all tests.sh scripts,
- commit e227815af5 makes start.pl pass
$test (the test's name) rather than $testdir (the path to the test's
directory) to stop.pl when a given server fails to start.
Thus, when a server is restarted from within a tests.sh script and such
a restart fails, stop.pl attempts to look for the server directory in a
nonexistent location ($testdir/$server/../$test, i.e. $testdir/$test,
instead of $testdir/../$test). Fix the issue by changing the working
directory before stop.pl is invoked in the scenario described above.
(cherry picked from commit 4afad2a047)
Change to cmocka broken initialization of TZ environment. This time,
commit 1cf1254051 is not soon enough. Has
to be moved more forward, before any other tests. It library is not full
reinitialized on each test.
(cherry picked from commit 71c4fad592)
When sending an udp query (resquery_send) we first issue an asynchronous
isc_socket_connect and increment query->connects, then isc_socket_sendto2
and increment query->sends.
If we happen to cancel this query (fctx_cancelquery) we need to cancel
all operations we might have issued on this socket. If we are under very high
load the callback from isc_socket_connect (resquery_udpconnected) might have
not yet been fired. In this case we only cancel the CONNECT event on socket,
and ignore the SEND that's waiting there (as there is an `else if`).
Then we call dns_dispatch_removeresponse which kills the dispatcher socket
and calls isc_socket_close - but if system is under very high load, the send
we issued earlier might still not be complete - which triggers an assertion
because we're trying to close a socket that's still in use.
The fix is to always check if we have incomplete sends on the socket and cancel
them if we do.
(cherry picked from commit 56183a3917)
On Unix systems, the CYGWIN environment variable is not set at all when
BIND system tests are run. If a named instance crashes on shutdown or
otherwise fails to clean up its pidfile and the CYGWIN environment
variable is not set, stop.pl will print an uninitialized value warning
on standard error. Prevent this by using defined().
(cherry picked from commit 91e5a99b9b)
ifconfig.sh depends on config.guess for platform guessing. It uses it to
choose between ifconfig or ip tools to configure interfaces. If
system-wide automake script is installed and local was not found, use
platform guess. It should work well on mostly any sane platform. Still
prefers local guess, but passes when if cannot find it.
(cherry picked from commit 38301052e1)
In the "gost" system test, the ./NS RRset returned in the response to
ns2's priming query might not yet be validated when ns2 assembles the
response to the ./SOA query. If that happens, the ./NS RRset will not
be placed in the AUTHORITY section of the response to the ./SOA query,
triggering a false positive for the "gost" system test as the ./NS RRset
is always present in the response sent by ns1 (since it is authoritative
for the root zone). As the purpose of the "gost" system test is to
check whether a zone signed using GOST is properly validated and only
positive responses are inspected, use the +noauth dig option for all
queries in that test, so that the contents of the AUTHORITY section do
not influence its outcome.
When a zone is converted from NSEC to NSEC3, the private record at zone
apex indicating that NSEC3 chain creation is in progress may be removed
during a different (later) zone_nsec3chain() call than the one which
adds the NSEC3PARAM record. The "delzsk.example" zone check only waits
for the NSEC3PARAM record to start appearing in dig output while private
records at zone apex directly affect "rndc signing -list" output. This
may trigger false positives for the "autosign" system test as the output
of the "rndc signing -list" command used for checking ZSK deletion
progress may contain extra lines which are not accounted for. Ensure
the private record is removed from zone apex before triggering ZSK
deletion in the aforementioned check.
Also future-proof the ZSK deletion progress check by making it only look
at lines it should care about.
(cherry picked from commit e02de04e97)
For checks querying a named instance with "dnssec-accept-expired yes;"
set, authoritative responses have a TTL of 300 seconds. Assuming empty
resolver cache, TTLs of RRsets in the ANSWER section of the first
response to a given query will always match their authoritative
counterparts. Also note that for a DNSSEC-validating named resolver,
validated RRsets replace any existing non-validated RRsets with the same
owner name and type, e.g. cached from responses received while resolving
CD=1 queries. Since TTL capping happens before a validated RRset is
inserted into the cache and RRSIG expiry time does not impose an upper
TTL bound when "dnssec-accept-expired yes;" is set and, as pointed out
above, the original TTLs of the relevant RRsets equal 300 seconds, the
RRsets in the ANSWER section of the responses to expiring.example/SOA
and expired.example/SOA queries sent with CD=0 should always be exactly
120 seconds, never a lower value. Make the relevant TTL checks stricter
to reflect that.
(cherry picked from commit a85cc41486)
Always expecting a TTL of exactly 300 seconds for RRsets found in the
ADDITIONAL section of responses received for CD=1 queries sent during
TTL capping checks is too strict since these responses will contain
records cached from multiple DNS messages received during the resolution
process.
In responses to queries sent with CD=1, ns.expiring.example/A in the
ADDITIONAL section will come from a delegation returned by ns2 while the
ANSWER section will come from an authoritative answer returned by ns3.
If the queries to ns2 and ns3 happen at different Unix timestamps,
RRsets cached from the older response will have a different TTL by the
time they are returned to dig, triggering a false positive.
Allow a safety margin of 60 seconds for checks inspecting the ADDITIONAL
section of responses to queries sent with CD=1 to fix the issue. A
safety margin this large is likely overkill, but it is used nevertheless
for consistency with similar safety margins used in other TTL capping
checks.
(cherry picked from commit 8baf859063)
Changes introduced by commit 6b8e4d6e69
were incomplete as not all time-sensitive checks were updated to match
revised "nta-lifetime" and "nta-recheck" values. Prevent rare false
positives by updating all NTA-related checks so that they work reliably
with "nta-lifetime 12s;" and "nta-recheck 9s;". Update comments as well
to prevent confusion.
(cherry picked from commit 9a36a1bba3)
During "dlv" system test setup, the "sed" regex used for mangling the
DNSKEY RRset for the "druz" zone does not include the plus sign ("+"),
which may:
- cause the replacement to happen near the end of DNSKEY RDATA, which
can cause the latter to become an invalid Base64 string,
- prevent the replacement from being performed altogether.
Both cases prevent the "dlv" system test from behaving as intended and
may trigger false positives. Add the missing character to the
aforementioned regex to ensure the replacement is always performed on
bytes 10-25 of DNSKEY RDATA.
(cherry picked from commit fd13fef299)
Make delv honor the operating system's preferred ephemeral port range
instead of always using the default 1024-65535 range for outgoing
messages.
(cherry picked from commit ada6846a10)
Use them in structs for various rdata types where they are missing.
This doesn't change the structs since we are replacing explicit
uint8_t field types with aliases for uint8_t.
Use dns_dsdigest_t in library function arguments.
(cherry picked from commit 0f219714e1)
Alphabetize options and synopsis; remove spurious -z from synopsis;
refer to -T KEY in options that are only relevant to pre-RFC3755
DNSSEC, and add a -f KSK example.
(cherry picked from commit 1954f8d2bf)
Make nsupdate honor the operating system's preferred ephemeral port
range instead of always using the default 1024-65535 range for outgoing
messages.
(cherry picked from commit 06f582f23e)
The "check key refreshes are resumed after root servers become
available" check may trigger a false positive for the "mkeys" system
test if the second example/TXT query sent by dig is received by ns5 less
than a second after it receives a REFUSED response to the upstream query
it sends to ns1 in order to resolve the first example/TXT query sent by
dig. Since that REFUSED response from ns1 causes ns5 to return a
SERVFAIL answer to dig, example/TXT is added to the SERVFAIL cache,
which is enabled by default with a TTL of 1 second. This in turn may
cause ns5 to return a cached SERVFAIL response to the second example/TXT
query sent by dig, i.e. make ns5 not perform full query processing as
expected by the check.
Since the primary purpose of the check in question is to ensure that key
refreshes are resumed once initially unavailable root servers become
available, the optimal solution appears to be disabling SERVFAIL cache
for ns5 as doing that still allows the check to fulfill its purpose and
it is arguably more prudent than always sleeping for 1 second.
(cherry picked from commit 7c6bff3c4e)
For consistency between all system tests, add missing setup.sh scripts
for tests which do not have one yet and ensure every setup.sh script
calls its respective clean.sh script.
(cherry picked from commit e410803919)
Temporary files created by a given system test should be removed by its
clean.sh script, not its setup.sh script. Remove redundant "rm"
invocations from setup.sh scripts. Move required "rm" invocations from
setup.sh scripts to their corresponding clean.sh scripts.
(cherry picked from commit c64ed484c8)
If dots are not escaped in the "1.2.3.4" regular expressions used for
checking whether IP address 1.2.3.4 is present in the tested resolver's
answers, a COOKIE that matches such a regular expression will trigger a
false positive for the "resolver" system test. Properly escape dots in
the aforementioned regular expressions to prevent that from happening.
(cherry picked from commit 70ae48e5cb)
For all system tests utilizing named instances, call clean.sh from each
test's setup.sh script in a consistent way to make sure running the same
system test multiple times using run.sh does not trigger false positives
caused by stale files created by previous runs.
Ideally we would just call clean.sh from run.sh, but that would break
some quirky system tests like "rpz" or "rpzrecurse" and being consistent
for the time being does not hurt.
(cherry picked from commit a077a3ae8a)
[‘What to do if your BIND or DHCP server has crashed.’](https://kb.isc.org/article/AA-00340/89/What-to-do-if-your-BIND-or-DHCP-server-has-crashed.html)
@@ -112,7 +112,8 @@ If you have a crash, you may want to consult
BIND is licensed under the
[Mozilla Public License 2.0](http://www.isc.org/downloads/software-support-policy/isc-license/).
Earier versions (BIND 9.10 and earlier) were licensed under the [ISC License](http://www.isc.org/downloads/software-support-policy/isc-license/)
Earlier versions (BIND 9.10 and earlier) were licensed under the
[ISC License](https://www.isc.org/licenses/)
ISC does not require an explicit copyright assignment for patch
contributions. However, by submitting a patch to ISC, you implicitly
@@ -128,7 +129,7 @@ Patches for BIND may be submitted directly via merge requests in
repository for BIND.
Patches can also be submitted as diffs against a specific version of
BIND -- preferably the current top of the `master` branch. Diffs may
BIND -- preferably the current top of the `main` branch. Diffs may
be generated using either `git format-patch` or `git diff`.
Those wanting to write code for BIND may be interested in the
|`STD_CDEFINES`|Any additional preprocessor symbols you want defined. Defaults to empty string. For a list of possible settings, see the file [OPTIONS](OPTIONS.md).|
|`LDFLAGS`|Linker flags. Defaults to empty string.|
|`BUILD_CC`|Needed when cross-compiling: the native C compiler to use when building for the target system.|
|`BUILD_CFLAGS`|Optional, used for cross-compiling|
|`BUILD_CPPFLAGS`||
|`BUILD_LDFLAGS`||
|`BUILD_LIBS`||
|`BUILD_CFLAGS`|`CFLAGS` for the target system during cross-compiling.|
|`BUILD_CPPFLAGS`|`CPPFLAGS` for the target system during cross-compiling.|
|`BUILD_LDFLAGS`|`LDFLAGS` for the target system during cross-compiling.|
|`BUILD_LIBS`|`LIBS` for the target system during cross-compiling.|
Additional environment variables affecting the build are listed at the
end of the `configure` help text, which can be obtained by running the
command:
$ ./configure --help
On platforms where neither the C11 Atomic operations library nor custom ISC
atomic operations are available, updating the statistics counters is not
locked due to performance reasons and therefore the counters might be
inaccurate. Anybody building BIND 9 is strongly advised to use a modern
C11 compiler with C11 Atomic operations library support.
#### <a name="macos"> macOS
Building on macOS assumes that the "Command Tools for Xcode" is installed.
This can be downloaded from https://developer.apple.com/download/more/
or if you have Xcode already installed you can run "xcode-select --install".
This will add /usr/include to the system and install the compiler and other
— zone file validity checking or converting tool
</p>
<p><spanclass="application">named-checkzone</span>, <spanclass="application">named-compilezone</span>— zone file validity checking or converting tool</p>
@@ -351,9 +351,15 @@ Attempt to display the contents of messages which are malformed\&. The default i
.PP
\fB+bufsize=B\fR
.RS4
Set the UDP message buffer size advertised using EDNS0 to
This option sets the UDP message buffer size advertised using EDNS0 to
\fIB\fR
bytes\&. The maximum and minimum sizes of this buffer are 65535 and 0 respectively\&. Values outside this range are rounded up or down appropriately\&. Values other than zero will cause a EDNS query to be sent\&.
bytes\&. The maximum and minimum sizes of this buffer are 65535 and 0, respectively\&.
+bufsize=0
disables EDNS (use
+bufsize=0 +edns
to send a EDNS messages with a advertised size of 0 bytes)\&.
+bufsize
restores the default buffer size\&.
.RE
.PP
\fB+[no]cdflag\fR
@@ -368,14 +374,20 @@ Display [do not display] the CLASS when printing the record\&.
.PP
\fB+[no]cmd\fR
.RS4
Toggles the printing of the initial comment in the output identifying the version of
Toggles the printing of the initial comment in the output, identifying the version of
\fBdig\fR
and the query options that have been applied\&. This comment is printed by default\&.
and the query options that have been applied\&. This option always has global effect; it cannot be set globally and then overridden on a per\-lookup basis\&. The default is to print this comment\&.
.RE
.PP
\fB+[no]comments\fR
.RS4
Toggle the display of comment lines in the output\&. The default is to print comments\&.
Toggles the display of some comment lines in the output, containing information about the packet header and OPT pseudosection, and the names of the response section\&. The default is to print these comments\&.
.sp
Other types of comments in the output are not affected by this option, but can be controlled using other command line switches\&. These include
\fB+[no]cmd\fR,
\fB+[no]question\fR,
\fB+[no]stats\fR, and
\fB+[no]rrcomments\fR\&.
.RE
.PP
\fB+[no]cookie\fR\fB[=####]\fR
@@ -554,12 +566,12 @@ Set [restore] the DNS message opcode to the specified value\&. The default value
.PP
\fB+[no]qr\fR
.RS4
Print [do not print] the query as it is sent\&. By default, the query is not printed\&.
Toggles the display of the query message as it is sent\&. By default, the query is not printed\&.
.RE
.PP
\fB+[no]question\fR
.RS4
Print [do not print] the question section of a query when an answer is returned\&. The default is to print the question section as a comment\&.
Toggles the display of the question section of a query when an answer is returned\&. The default is to print the question section as a comment\&.
.RE
.PP
\fB+[no]rdflag\fR
@@ -572,11 +584,11 @@ A synonym for
.RS4
Toggle the setting of the RD (recursion desired) bit in the query\&. This bit is set by default, which means
\fBdig\fR
normally sends recursive queries\&. Recursion is automatically disabled when the
normally sends recursive queries\&. Recursion is automatically disabled when using the
\fI+nssearch\fR
or
option, and when using
\fI+trace\fR
query options are used\&.
except for an initial recursive query to get the list of root servers\&.
.RE
.PP
\fB+retry=T\fR
@@ -607,7 +619,7 @@ determines if the name will be treated as relative or not and hence whether a se
.PP
\fB+[no]short\fR
.RS4
Provide a terse answer\&. The default is to print the answer in a verbose form\&.
Provide a terse answer\&. The default is to print the answer in a verbose form\&. This option always has global effect; it cannot be set globally and then overridden on a per\-lookup basis\&.
.RE
.PP
\fB+[no]showsearch\fR
@@ -637,7 +649,7 @@ causes fields not to be split at all\&. The default is 56 characters, or 44 char
.PP
\fB+[no]stats\fR
.RS4
This query option toggles the printing of statistics: when the query was made, the size of the reply and so on\&. The default behavior is to print the query statistics\&.
Toggles the printing of statistics: when the query was made, the size of the reply and so on\&. The default behavior is to print the query statistics as a comment after each lookup\&.
.RE
.PP
\fB+[no]subnet=addr[/prefix\-length]\fR
@@ -811,5 +823,5 @@ There are probably too many query options\&.
\fBInternet Systems Consortium, Inc\&.\fR
.SH"COPYRIGHT"
.br
Copyright \(co 2000-2011, 2013-2019 Internet Systems Consortium, Inc. ("ISC")
Copyright \(co 2000-2011, 2013-2021 Internet Systems Consortium, Inc. ("ISC")
Specify the port on the server to query\&. The default is 53\&.
.RE
.PP
\-r
.RS4
Non\-recursive query: Setting this option clears the RD (recursion desired) bit in the query\&. This should mean that the name server receiving the query will not attempt to resolve
@@ -265,5 +270,5 @@ runs\&.
\fBInternet Systems Consortium, Inc\&.\fR
.SH"COPYRIGHT"
.br
Copyright \(co 2000-2002, 2004, 2005, 2007-2009, 2014-2019 Internet Systems Consortium, Inc. ("ISC")
Copyright \(co 2000-2002, 2004, 2005, 2007-2009, 2014-2021 Internet Systems Consortium, Inc. ("ISC")
@@ -98,7 +99,7 @@ Specify a digest algorithm to use when converting DNSKEY records to DS records\&
.sp
The
\fIalgorithm\fR
must be one of SHA\-1, SHA\-256, or SHA\-384\&. These values are case insensitive, and the hyphen may be omitted\&. If no algorithm is specified, the default is SHA\-256\&.
must be one of SHA\-1, SHA\-256, or SHA\-384\&. These values are case insensitive, and the hyphen may be omitted\&. If no algorithm is specified, the default is to use both SHA\-1 and SHA\-256\&.
.RE
.PP
\-A
@@ -237,5 +238,5 @@ RFC 7344
\fBInternet Systems Consortium, Inc\&.\fR
.SH "COPYRIGHT"
.br
Copyright \(co 2008-2012, 2014-2016, 2018, 2019 Internet Systems Consortium, Inc. ("ISC")
Copyright \(co 2008-2012, 2014-2016, 2018-2021 Internet Systems Consortium, Inc. ("ISC")
@@ -86,7 +86,7 @@ Specifies the label for a key pair in the crypto hardware\&.
.sp
When
BIND
9 is built with OpenSSL\-based PKCS#11 support, the label is an arbitrary string that identifies a particular key\&. It may be preceded by an optional OpenSSL engine name, followed by a colon, as in "pkcs11:\fIkeylabel\fR"\&.
9 is built with OpenSSL\-based PKCS#11 support, the label is an arbitrary string that identifies a particular key\&.
.sp
When
BIND
@@ -301,5 +301,5 @@ The PKCS#11 URI Scheme (draft\-pechanec\-pkcs11uri\-13)\&.
\fBInternet Systems Consortium, Inc\&.\fR
.SH "COPYRIGHT"
.br
Copyright \(co 2008-2012, 2014-2019 Internet Systems Consortium, Inc. ("ISC")
Copyright \(co 2008-2012, 2014-2021 Internet Systems Consortium, Inc. ("ISC")
of the key is specified on the command line\&. For DNSSEC keys, this must match the name of the zone for which the key is being generated\&.
.SH "OPTIONS"
.PP
\-3
.RS 4
Use an NSEC3\-capable algorithm to generate a DNSSEC key\&. If this option is used with an algorithm that has both NSEC and NSEC3 versions, then the NSEC3 version will be used; for example,
\fBdnssec\-keygen \-3a RSASHA1\fR
specifies the NSEC3RSASHA1 algorithm\&.
.RE
.PP
\-a \fIalgorithm\fR
.RS 4
Selects the cryptographic algorithm\&. For DNSSEC keys, the value of
@@ -78,21 +85,9 @@ The key size does not need to be specified if using a default algorithm\&. The d
must be used\&.
.RE
.PP
\-n \fInametype\fR
.RS 4
Specifies the owner type of the key\&. The value of
\fBnametype\fR
must either be ZONE (for a DNSSEC zone key (KEY/DNSKEY)), HOST or ENTITY (for a key associated with a host (KEY)), USER (for a key associated with a user(KEY)) or OTHER (DNSKEY)\&. These values are case insensitive\&. Defaults to ZONE for DNSKEY generation\&.
.RE
.PP
\-3
.RS 4
Use an NSEC3\-capable algorithm to generate a DNSSEC key\&. If this option is used and no algorithm is explicitly set on the command line, NSEC3RSASHA1 will be used by default\&. Note that RSASHA256, RSASHA512, ECCGOST, ECDSAP256SHA256, ECDSAP384SHA384, ED25519 and ED448 algorithms are NSEC3\-capable\&.
.RE
.PP
\-C
.RS 4
Compatibility mode: generates an old\-style key, without any metadata\&. By default,
Compatibility mode: generates an old\-style key, without any timing metadata\&. By default,
\fBdnssec\-keygen\fR
will include the key\*(Aqs creation date in the metadata stored with the private key, and other dates may be set there as well (publication date, activation date, etc)\&. Keys that include this data may be incompatible with older versions of BIND; the
\fB\-C\fR
@@ -151,9 +146,17 @@ none
is the same as leaving it unset\&.
.RE
.PP
\-n \fInametype\fR
.RS 4
Specifies the owner type of the key\&. The value of
\fBnametype\fR
must either be ZONE (for a DNSSEC zone key (KEY/DNSKEY)), HOST or ENTITY (for a key associated with a host (KEY)), USER (for a key associated with a user(KEY)) or OTHER (DNSKEY)\&. These values are case insensitive\&. Defaults to ZONE for DNSKEY generation\&.
.RE
.PP
\-p \fIprotocol\fR
.RS 4
Sets the protocol value for the generated key\&. The protocol is a number between 0 and 255\&. The default is 3 (DNSSEC)\&. Other possible values for this argument are listed in RFC 2535 and its successors\&.
Sets the protocol value for the generated key, for use with
\fB\-T KEY\fR\&. The protocol is a number between 0 and 255\&. The default is 3 (DNSSEC)\&. Other possible values for this argument are listed in RFC 2535 and its successors\&.
.RE
.PP
\-q
@@ -196,20 +199,21 @@ Using any TSIG algorithm (HMAC\-* or DH) forces this option to KEY\&.
.PP
\-t \fItype\fR
.RS 4
Indicates the use of the key\&.
Indicates the use of the key, for use with
\fB\-T KEY\fR\&.
\fBtype\fR
must be one of AUTHCONF, NOAUTHCONF, NOAUTH, or NOCONF\&. The default is AUTHCONF\&. AUTH refers to the ability to authenticate data, and CONF the ability to encrypt data\&.
.RE
.PP
\-v \fIlevel\fR
.RS 4
Sets the debugging level\&.
.RE
.PP
\-V
.RS 4
Prints version information\&.
.RE
.PP
\-v \fIlevel\fR
.RS 4
Sets the debugging level\&.
.RE
.SH "TIMING OPTIONS"
.PP
Dates can be expressed in the format YYYYMMDD or YYYYMMDDHHMMSS\&. If the argument begins with a \*(Aq+\*(Aq or \*(Aq\-\*(Aq, it is interpreted as an offset from the present time\&. For convenience, if such an offset is followed by one of the suffixes \*(Aqy\*(Aq, \*(Aqmo\*(Aq, \*(Aqw\*(Aq, \*(Aqd\*(Aq, \*(Aqh\*(Aq, or \*(Aqmi\*(Aq, then the offset is computed in years (defined as 365 24\-hour days, ignoring leap years), months (defined as 30 24\-hour days), weeks, days, hours, or minutes, respectively\&. Without a suffix, the offset is computed in seconds\&. To explicitly prevent a date from being set, use \*(Aqnone\*(Aq or \*(Aqnever\*(Aq\&.
@@ -338,6 +342,10 @@ creates the files
Kexample\&.com\&.+003+26160\&.key
and
Kexample\&.com\&.+003+26160\&.private\&.
.PP
To generate a matching key\-signing key, issue the command:
.PP
\fBdnssec\-keygen \-a DSA \-b 768 \-n ZONE \-f KSK example\&.com\fR
.SH "SEE ALSO"
.PP
\fBdnssec-signzone\fR(8),
@@ -350,5 +358,5 @@ RFC 4034\&.
\fBInternet Systems Consortium, Inc\&.\fR
.SH "COPYRIGHT"
.br
Copyright \(co 2000-2005, 2007-2012, 2014-2019 Internet Systems Consortium, Inc. ("ISC")
Copyright \(co 2000-2005, 2007-2012, 2014-2021 Internet Systems Consortium, Inc. ("ISC")
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Tinderbox User
Michał Kępień
Ondřej SurýandMichał Kępień
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Ondřej Surý
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Mark Andrews
Matthijs Mekking
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Petr MensikandMark Andrews
Havard EidnesandMichal Nowak
Witold KręcickiandMichal Nowak
Suzanne GoldlustandMark Andrews
Stephen MorrisandMichał Kępień
Tony FinchandMark Andrews
Witold KręcickiandMichał Kępień
Vicky RiskandMichał Kępień
Samuel ThibaultandOndřej Surý
Brian ConryandOndřej Surý
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Curtis BlackburnandEvan Hunt